write a query which displays subject id and the average of construct 1 and construct 2 from the surveys which were answered within the first 15 days of january or february. the construct average will be calculated using the available surveys per subject.sample of expected output:

Answers

Answer 1

SELECT subject_id, AVG((construct1 + construct2) / 2) as average_construct
FROM surveys
WHERE (EXTRACT(MONTH FROM answered_date) = 1 AND EXTRACT(DAY FROM answered_date) <= 15)
  OR (EXTRACT(MONTH FROM answered_date) = 2 AND EXTRACT(DAY FROM answered_date) <= 15)
GROUP BY subject_id;

To write a query that displays the subject id and the average of construct 1 and construct 2 from the surveys answered within the first 15 days of January or February, follow these steps:

1. Begin with the SELECT statement to choose the desired columns (subject_id, and the average of construct 1 and construct 2).
2. Use the FROM statement to specify the table (surveys).
3. Apply the WHERE statement to filter the surveys based on the date criteria (within the first 15 days of January or February).
4. Utilize the GROUP BY statement to group the results by subject_id.
5. Finally, use the AVG() function to calculate the average of construct 1 and construct 2.

Here's the SQL query:

```sql
SELECT subject_id, AVG((construct1 + construct2) / 2) as average_construct
FROM surveys
WHERE (EXTRACT(MONTH FROM answered_date) = 1 AND EXTRACT(DAY FROM answered_date) <= 15)
  OR (EXTRACT(MONTH FROM answered_date) = 2 AND EXTRACT(DAY FROM answered_date) <= 15)
GROUP BY subject_id;
```

This query will display the subject id and the average of Construct 1 and Construct 2 from the surveys answered within the first 15 days of January or February. The construct average is calculated using the available surveys per subject.

Learn more about average function in SQL:https://brainly.com/question/30333197

#SPJ11


Related Questions

which of the following is not a good reason to network?. question 3 options: a) none. all are good reasons. b) gain access to diverse skill sets c) broaden opportunity d) gain access to private information e) expand power previous page next page

Answers

Reduce the amount of routing table entries by combining several entries is not a strong reason to use a network.

What is network?A group of computers that share resources on or provided by network nodes is referred to as a computer network. To communicate with one another across digital links, computers use standard communication protocols. A set of two or more devices or "nodes" that can communicate together is referred to as a network in computing. It is possible for physical or wireless connections to be made between the involved nodes or devices. The crucial factor is that at least two distinct components are present and are linked. A network is made up of two or more computers connected to share resources (such CDs and printers), transfer files, and enable electronic communication. Cables, phone lines, radio waves, satellites, infrared laser beams, or other technologies can all be used to connect the computers on a network.

To learn more about network, refer to:

https://brainly.com/question/1326000

what are the primary concepts of a relational database model? (check all that apply) check all that apply entitiesentities attributesattributes primary keyprimary key foreign keyforeign key data cubedata cube data warehousedata warehouse data lakedata lake

Answers

The primary concepts of a relational Database model include entities, attributes, primary keys, and foreign keys.



1. Entities: These are the objects or items represented in a database. They are usually defined by a table, with each row in the table representing an instance of the entity.

2. Attributes: Attributes are the properties or characteristics that describe an entity. In a table, each column represents an attribute, and each row in the table has a specific value for each attribute.

3. Primary Key: This is a unique identifier for each row in a table, which ensures that no two rows have the same values for the primary key attributes. It is essential for establishing relationships between tables and maintaining data integrity.

4. Foreign Key: A foreign key is an attribute or set of attributes in one table that refers to the primary key in another table. It is used to create relationships between entities and ensure referential integrity within the database.

Other terms like data cubes, data warehouses, and data lakes are related to data storage and analysis, but they are not primary concepts of the relational database model itself.

To Learn More About Database

https://brainly.com/question/24027204

#SPJ11

given this input script: 3 5 and this output script: a b 3 op equal what two opcodes should replace a and b to make this a valid transaction?

Answers

To make this a valid transaction, the opcodes that should replace a and b are OP_PUSHNUM_3 and OP_PUSHNUM_5 respectively. These opcodes will push the values 3 and 5 onto the stack, which will then be compared using the opcode OP_EQUAL.

In general, opcodes are used in low-level programming languages and are used to perform specific operations on the data stored in memory or on the stack. The specific opcodes needed for a given transaction would depend on the desired operation and the data being manipulated.Based on the provided input and output script, it appears that the transaction involves performing some operation on the values "3" and "5", and the output script indicates that the result of the operation should be "equal". Without additional information, it is impossible to determine the specific operation that was performed and the opcodes needed to execute that operation.

Learn more about  transaction here

https://brainly.com/question/24730931

#SPJ11

a company has multiple cas and intermediate cas issuing digital certificates in different departments, with no one cross-checking their work. which pki trust model should the company use? a. bridge trust model b. web of trust model c. hierarchical trust model d. distributed trust model

Answers

The Hierarchical trust model is the best option for a company with multiple CAs issuing digital certificates in different departments, as it provides centralized control and monitoring of certificate issuance while still allowing for delegation of responsibilities.

The situation presented indicates a lack of coordination and oversight within the company's PKI, which can lead to issues such as duplication of certificates or issuance of fraudulent ones. To address this, the company should implement a PKI trust model that ensures proper control and monitoring of certificate issuance across all departments.
Out of the four options presented, the most suitable one for this scenario is the hierarchical trust model. This model involves a central CA that acts as the root of trust for the entire organization, with intermediate CAs that issue certificates to specific departments or areas of the company. This setup allows for better control and coordination of certificate issuance, as the central CA can monitor and audit the work of the intermediate CAs to ensure compliance and accuracy.
The bridge trust model involves two or more independent CAs that agree to trust each other's certificates, but this may not provide enough oversight for the situation at hand. The web of trust model relies on trust relationships between individuals or organizations, which may not be practical for a large, multi-departmental company. The distributed trust model involves multiple CAs that issue and verify certificates, but this may be too complex for the company's needs.In summary, the hierarchical trust model is the best option for a company with multiple CAs issuing digital certificates in different departments, as it provides centralized control and monitoring of certificate issuance while still allowing for delegation of responsibilities.

To Learn More About CAs

https://brainly.com/question/8316419

#SPJ11

a unit that moves shelves in the unit around a central hub to bring files to the operator is

Answers

The unit you are describing is called a "rotary file system" or a "rotary filing cabinet." It is a type of storage system that consists of circular shelves that rotate around a central hub to bring files or other stored items to the user.

Files are a common means of organizing and storing information in various formats, such as text, images, and multimedia. They are typically identified by a unique name and extension, which denotes the type of data they contain. Files can be stored on different types of storage media, including hard drives, flash drives, CDs, and cloud storage. They can be opened and edited using specific software applications or viewed in a web browser. Effective file management is essential for maintaining organization, security, and accessibility of information. This includes practices such as naming conventions, version control, and backup strategies. With the increasing amount of digital data generated, efficient file management is becoming increasingly important in personal and professional settings.

Learn more about files here:

https://brainly.com/question/14194096

#SPJ11

A unit that moves shelves in the unit around a central hub to bring files to the operator is known as an automated storage and retrieval system (ASRS).

High-density storage systems that automatically store and retrieve things are known as automated storage and retrieval systems (ASRS). They are utilised in many different places, such as factories, warehouses, and distribution centres. The automated storage and retrieval of objects provided by the ASRS system helps to increase productivity and lower labour expenses.

Comparing the ASRS system to conventional storage systems reveals a number of advantages. It offers high-density storage, which allows for the storage of more objects in a smaller area. As a result, less space is needed for storage, which can result in significant financial savings. Additionally, the technology allows for quicker item access, which boosts productivity and lowers labour expenses.

The ASRS system can also be connected with other systems, such as order fulfilment and inventory management systems. Errors are decreased and overall efficiency is increased thanks to this integration.

Learn more about the storage and retrieval system :

https://brainly.com/question/8042791

#SPJ11

questionmichelle often needs to call a client who lives in a rural area with a shaky internet connection. which of the following is the best method for her to use to contact the client?responsesan internet conference servicean internet conference servicea voip phone systema voip phone systema cell phonea cell phone

Answers

Michelle should use a cell phone to contact her client, as it does not depend on internet Connectivity and is more reliable in rural areas where internet connections might be unstable.

The best method for Michelle to use to contact the client living in a rural area with a shaky internet connection would be using a cell phone.

Here's a breakdown of the options:

1. An internet conference service: This method requires a stable internet connection, which the client lacks. Thus, it wouldn't be suitable for Michelle to use.

2. A VoIP phone system: This option also relies on a stable internet connection to function effectively. Since the client's internet connection is shaky, this method is not ideal.

3. A cell phone: This option uses cellular network signals rather than relying on internet connectivity. As a result, it's more suitable for contacting clients in rural areas with unstable internet connections.

In conclusion, Michelle should use a cell phone to contact her client, as it does not depend on internet connectivity and is more reliable in rural areas where internet connections might be unstable.

To Learn More About Connectivity

https://brainly.com/question/28342757

#SPJ11

you need to provide dhcp and file sharing services to a physical network. these services should be deployed using virtualization. which type of virtualization should you implement? answer virtual networks virtual servers network as a service (naas) virtual desktops

Answers

A physical network requires file sharing and dhcp services. Utilizing virtualization is the best way to deploy these services. You should use virtual servers as a sort of virtualization.

What is physical network?The coaxial cable, twisted pair, fibre optic, and telephone lines used to connect the network's various pieces of hardware, the network adapter used by computers connected to the network (hosts), and any concentrators, repeaters, routers, or bridges that may be employed in the network make up the physical network. The Internet is a global network of physical cables, some of which can be copper telephone wires, TV cables, and fibre optic cables. These actual cables are necessary in order for wireless connections to the Internet, including Wi-Fi and 3G/4G. Each of the four different types of wireless networks—wireless local area networks, wireless metropolitan area networks, wireless personal area networks, and wireless wide area networks—has a specific purpose.

To learn more about physical network, refer to:

https://brainly.com/question/30452844

The best type of virtualization for providing DHCP and file-sharing services in a physical network is using virtual servers. These are instances of servers in a software emulation, which allows different services to be hosted on different servers.

To provide DHCP and file-sharing services in a physical network environment using virtualization, you should implement virtual servers. Virtual servers are instances of a server running in a software emulation of a physical server. This form of virtualization allows you to host different services on different servers, simplifying management and increasing efficiency. For instance, you could host your DHCP service on one virtual server and your file-sharing services on another whilst keeping your underlying physical network hardware the same.

Learn more about virtual servers here:

https://brainly.com/question/31671704

the concept of having multiple layers of security policies and practices is known as: cybersecurity culture multifactor authentication defense in depth biometrics

Answers

The concept of having multiple layers of security policies and practices is known as defense in depth. It is a key principle of cybersecurity culture, which emphasizes the importance of implementing a range of security measures to protect against various threats.

Multifactor authentication and biometrics are examples of specific security practices that can be included as part of a defense in depth strategy.The concept of having multiple layers of security policies and practices is known as "defense in depth." Defense in depth is a security strategy that employs multiple layers of defense mechanisms to protect an organization's assets, such as data, systems, and networks, from various types of cyber threats. These layers can include both technical and non-technical security controls, such as firewalls, intrusion detection systems, access control mechanisms, security awareness training, and incident response procedures. The idea is to create a layered defense that makes it more difficult for attackers to penetrate an organization's systems and steal or compromise sensitive information.

Learn more about cybersecurity here

https://brainly.in/question/51357539

#SPJ11

The concept of having multiple layers of security policies and practices is known as defense in depth.

This approach to cybersecurity involves implementing various measures and controls at different levels of an organization's infrastructure to create a strong, multi-layered defense against cyber threats. It includes not only technology solutions like firewalls and antivirus software but also training and education for employees, regular security audits, and policies and procedures for data handling and access control. Multifactor authentication and biometrics can be part of this defense in depth strategy, but they are individual components rather than the overarching concept.

The ultimate goal of defense in depth is to create a cybersecurity culture throughout the organization, where security is top of mind for everyone and is woven into the fabric of daily operations.

To learn more about defense in depth visit : https://brainly.com/question/30395225

#SPJ11

which type of document addresses the specific concerns realted to access given to administrators and certain support staff?

Answers

A security policy document addresses specific concerns related to access given to administrators and certain support staff. It

outlines guidelines for access control, password management, and other security measures to protect sensitive information from unauthorized access or misuse.The document specifies the roles and responsibilities of administrators and support staff, along with procedures for granting and revoking access privileges. It also includes guidelines for monitoring and logging access, reporting security incidents, and conducting periodic security audits. By implementing a comprehensive security policy document, organizations can ensure that their sensitive information is protected from internal and external threats, and that access is only granted to authorized personnel with a legitimate need for such access.

Learn more about document addresses here;

https://brainly.com/question/29459383

#SPJ11

In active multiprogramming schemes, a job can monopolize the CPU for a long time while all other jobs waited. True or False

Answers

In active multiprogramming schemes, a job can monopolize the CPU for a long time while all other jobs waited. The statement is False.

Multiprogramming is a computer operating system feature that allows multiple programs to run concurrently on a single CPU. In multiprogramming schemes, the operating system can load multiple programs into main memory, and each program is given a small time slice to execute on the CPU. The operating system switches rapidly between programs, giving the impression that multiple programs are executing simultaneously.

In active multiprogramming schemes, a job cannot monopolize the CPU for a long time while all other jobs wait. Multiprogramming is designed to efficiently share the CPU among multiple jobs, preventing one job from dominating the processor and ensuring fair allocation of CPU time to all jobs.

This ensures that no single job monopolizes the CPU for an extended period of time, and that all jobs are given a fair share of the CPU's processing power. So, it is not true that a job can monopolize the CPU for a long time while all other jobs wait in active multiprogramming schemes.

To know more about operating system,

https://brainly.com/question/30778007

#SPJ11

In active multiprogramming schemes, a job can monopolize the CPU for a long time while all other jobs waited.
The statement is False.

Active multiprogramming is a technique used in operating systems where multiple jobs or tasks are executed concurrently on a single CPU. This is achieved by dividing the CPU's time into small intervals and switching between jobs during those intervals. The purpose of active multiprogramming is to increase the utilization of the CPU by keeping it busy with multiple tasks. Therefore, it is essential to ensure that no job monopolizes the CPU for a long time, as this can lead to a significant decrease in the overall efficiency of the system. To prevent any job from monopolizing the CPU, a scheduling algorithm is used to determine which job should be given access to the CPU at any given time.The scheduling algorithm takes into consideration various factors such as the priority of the job, the amount of time it has already spent on the CPU, and the amount of time it still requires to complete.

For such more questions on multiprogramming

https://brainly.com/question/15714813

#SPJ11

what is a form of data cleaning and transformation? building vlookup or xlookup functions to bring in data from other worksheets building pivot tables, crosstabs, charts, or graphs deleting columns or adding calculations to an excel spreadsheet

Answers

Data cleaning and transformation involve a combination of Techniques such as building VLOOKUP or XLOOKUP functions, creating pivot tables, crosstabs, charts, or graphs, and deleting columns or adding calculations to an Excel spreadsheet.

A form of data cleaning and transformation involves utilizing various Excel functions and features to organize, analyze, and present data more effectively.

This process can include building VLOOKUP or XLOOKUP functions to retrieve and consolidate data from multiple worksheets, making it easier to access and analyze relevant information.

Another useful method for data transformation is constructing pivot tables, crosstabs, charts, or graphs, which help in summarizing and visualizing data trends, patterns, and relationships.

These tools enable users to examine and manipulate large datasets quickly, making it easier to draw meaningful conclusions and make data-driven decisions.

Additionally, data cleaning can involve deleting unnecessary columns or adding calculations to an Excel spreadsheet. This step helps in streamlining data by removing irrelevant or redundant information and introducing new, meaningful insights through mathematical operations and formulas.

In summary, data cleaning and transformation involve a combination of techniques such as building VLOOKUP or XLOOKUP functions, creating pivot tables, crosstabs, charts, or graphs, and deleting columns or adding calculations to an Excel spreadsheet. These methods enable users to efficiently organize, analyze, and present data, ultimately leading to better decision-making and improved outcomes.

To Learn More About Data cleaning

https://brainly.com/question/30379834

#SPJ11

Chatbots are an example of what emerging technology in mobile retailing? A. push-based apps. B. one-click mobile payments. C. in-store beacons. D. artificial

Answers

Chatbots are an example of emerging technology in mobile retailing that falls under the category of D. artificial intelligence.

They use natural language processing and machine learning algorithms to simulate human conversation and provide personalized assistance to customers, making the shopping experience more efficient and convenient.

Unlike the intelligence exhibited by humans and other animals, artificial intelligence is the intelligence exhibited by robots. Speech recognition, computer vision, language translation, and other input mappings are a few examples of tasks where this is done.

Technologies that are in the early stages of development, have few real-world applications, or both, are considered emerging technologies. Although most of these technologies are recent, some older ones are also finding new uses. Emerging technologies are frequently seen as having the power to alter the status quo.

Technology, or as it is sometimes referred to, the modification and manipulation of the human environment, is the application of scientific knowledge to the practical goals of human life.

To know more about Technology, click here:

https://brainly.com/question/15059972

#SPJ11

Chatbots are an example of an emerging technology in mobile retailing called Artificial Intelligence (AI).

AI-powered chatbots are becoming increasingly popular in the retail industry due to their ability to streamline customer service, improve efficiency, and enhance the overall shopping experience.
These AI-driven chatbots leverage natural language processing and machine learning algorithms to understand user queries, provide accurate and relevant responses, and learn from interactions over time.

They are commonly integrated into messaging platforms, mobile apps, and websites to assist customers in various aspects of the shopping process, such as answering frequently asked questions, offering product recommendations, and even processing orders.
Some of the advantages of using AI chatbots in mobile retailing include:
Improved customer service:

Chatbots can respond to customer inquiries instantly and accurately, which leads to higher customer satisfaction.
Cost savings:

Chatbots can reduce labor costs associated with customer service by handling a large volume of customer queries without the need for additional staff.
Personalized shopping experiences:

AI chatbots can use data from previous interactions to tailor product recommendations and promotions, creating a more personalized and engaging shopping experience for customers.
Increased sales:

By providing quick, accurate responses and personalized recommendations, chatbots can drive customer engagement and ultimately increase sales.
In summary, chatbots are an excellent example of AI technology being utilized in the mobile retail space to enhance customer experiences, increase efficiency, and drive sales growth.

For similar question on Artificial.

https://brainly.com/question/30798195

#SPJ11

a (abbreviated ) is an internet-based set of tools that allows people to access and coordinate their lifelong health information and make appropriate parts of it available to those who need it.

Answers

A PHR is a internet-based  that enables individuals to access, manage and share their health information with authorized persons.

A Personal Health Record (PHR) is an internet-based set of tools that stores a person's medical history, medications, test results, and other health-related information. It is designed to be accessed and managed by the individual, allowing them to take charge of their own health and wellness. A PHR enables patients to easily share their health information with their healthcare providers, which can help improve the quality and efficiency of their care. Additionally, PHRs can be helpful for individuals who have multiple healthcare providers or who travel frequently, as it allows for easy access to their health information from anywhere with an internet  connection.

learn more about internet here:

https://brainly.com/question/14465266

#SPJ11

Other Questions
In the context of NYSE, a trading transaction at a trading post goes first to............ and then to.............., who willa SEC investigator; a specialist; send the transaction to commission broker for review onlya commission broker; a specialist; execute the orderCharles Swab; Morgan Stanley; review the transaction and send it over the specialist for a final price checkVanguard; a Fidelity specialist; execute the orderA red herring prospectus contains which of the following informationMultiple Choicedescriptions of the firm, its officers, board of directors, and their financial stakes at the firmthe firm's financial statementswhat is being offered, any pending legal case against the firm that could affect the security issueall of the choices Holt Enterprises recently paid a dividend, D0, of $1.75. It expects to have nonconstant growth of 14% for 2 years followed by a constant rate of 4% thereafter. The firm's required return is 8%.How far away is the horizon date?The terminal, or horizon, date is Year 0 since the value of a common stock is the present value of all future expected dividends at time zero.The terminal, or horizon, date is the date when the growth rate becomes nonconstant. This occurs at time zero.The terminal, or horizon, date is the date when the growth rate becomes constant. This occurs at the beginning of Year 2.The terminal, or horizon, date is the date when the growth rate becomes constant. This occurs at the end of Year 2.The terminal, or horizon, date is infinity since common stocks do not have a maturity date.What is the firm's horizon, or continuing, value? Do not round intermediate calculations. Round your answer to the nearest cent.$What is the firm's intrinsic value today, ? Do not round intermediate calculations. Round your answer to the nearest cent.$ What is the text structure of the passage dont get cold feet Those who suggest that the choices we make today determine what our future will be like are emphasizing the importance of a. human responsibility. O b. habituation O c. social scripts O d. natural selection in which movement from peer gynt, suite no. 1 did grieg imagine "the sun breaking through the clouds at the first forte"? Write an Algebraic Equation for each problem (include a let statement) and use it to solve the world problemOn number is eight less than five times another. If the the sum of the two numbers is 28, find the two numbers.The smaller number is __.The larger number is __. which of the following statements is most true about amalgam (silver and mercury) fillings placed during pregnancy? amalgam fillings are the most appropriate filling type for pregnant women they should be avoided because there are risks associated with placement of all types of fillings, not just amalgam fillings amalgam fillings are safe in pregnancy, but contraindicated in women who are breastfeeding white resin composites are preferred as they are believed to be safe during pregnancy and breastfeeding Ch 15The nurse is admitting the patient to the nursing unit at the hospital. the nurse is concerned that the patient is at risk of deep vein thrombosis because of which of the following risk factors? Select all that apply.A. Pt's advanced ageB. Pt's admitting diagnosis of cancerC. Pt's stated drug allergy to aspirinD. Pt's history of of prior venous thrombosisE. Pt's low protein diet legally prescribed limits on the number of terms an elected official can serve. Evaluate how community respond to women and children in light of the following aspects ........1)Bill of rights...2) Discrimination....3)Human Rights Violations Which factors forced many forest dewellers Write a hypothesis about the effect of the red light on thepopulation. Use the "if..then . .. because . . ." format,and be sure to answer the lesson question: "How doesnatural selection change the phenotypes within apopulation over time?" taylor claims that what ultimately gives meaning to human existence is that we continue to begin new tasks. what does he call this drive to begin anew? A company had 200 million shareholders' equity on January 1, 2020.During 2020, the company made 20 million net income and paid 63 million cash dividends. The company didn't issue any new common stod or buy had common stocks during the year. On December 31, 2020, the company reported 227 million shareholders equity in the balance sheet How much is the company's comprehensive income in 2020? A. 630 million B. 10 million. C. 20 million which type of rhythm did the artist use for the orange and yellow sky in the background of the collage? Can someone help me and answer this Your broker charges $0.0013 per share per trade. The exchange charges $0.0077 per share per trade for removing liquidity and credits $0.0059 per share per trade for adding liquidity. The current best BID price for stock XYZ is $64.97 per share, while the current best ASK price is $64.98 per share. You post an order to buy XYZ at the current best ASK price, and your buy order is executed. Shortly after, the best BID and ASK prices move lower (down) by one cent each. Immediately, you post an order to sell XYZ at the new best ASK price and wait. Shortly after, the best BID and ASK prices move higher (up) by one cent each. Your sell order is executed. What will be your net loss per share to buy and sell XYZ after considering the commissions and any exchange fees or credits? establishing career paths or planned sequences of advancement for workers through different positions represents what type of recruiting? Please only do 9,11, and 13! And please help!! 40 points!!! A 351 deferral is only available when a single shareholder transfers property for a controlling stock interest in a corporation. true or false?