THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 30

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A sample of 8 households was asked about their monthly income (x) and the number of hours they spend connected to the internet each month (y) .The data yield the following statistics:
,
,
,
,
-Calculate the sample covariance between x and y.

• A)136.313
• B)155.786
• C)181.750
• D)159.032

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Definitions:

Community Policing

A law enforcement strategy that emphasizes building ties and working closely with members of the communities to reduce crime and improve relations.

Social Norm Theory

A theory that explains behavior as influenced by perceptions of what is normatively acceptable and expected within a social group.

Norm-based Intervention

A strategy that aims to change behavior by altering perceived norms about what is typical or acceptable within a group.

Quasi-experimental Design

A research design that resembles an experimental design but lacks random assignment to control and experimental groups.