Research II Final Review

Question 1

Which of the following is true about hypothesis testing in social work research?

Accepted Answer

It helps determine if the observed effect is statistically significant

Question 2

The normal curve is important in statistics because:

Accepted Answer

Many inferential statistics rely on normal distribution assumptions

Question 3

What does a correlation of r = -0.85 indicate?

Accepted Answer

A strong negative relationship

Question 4

Which of the following best describes a Type II error?

Accepted Answer

Accepting a false null hypothesis

Question 5

A Type I error occurs when:

Accepted Answer

The null hypothesis is incorrectly rejected

Question 6

SW wants to compare client wait times before and after implementing a new intake procedure. Which is the best test?

Accepted Answer

Paired samples t-test

Question 7

SW wants to compare levels of depression between cl who receive group vs individual therapy. Which test is appropriate?

Accepted Answer

T-test

Question 8

Which of the following is NOT a requirement for Pearson’s correlation?

Accepted Answer

Variables are categorical

Question 9

SW examines the relationship between a client's age (in years) and depression score. What test is used?

Accepted Answer

Correlation

Question 10

What does the slope in a regression equation represent?

Accepted Answer

Change in dependent variable for each unit change in independent variable

Question 11

A researcher finds that higher caseload size is associated with higher burnout scores. What type of analysis is this?

Accepted Answer

Correlation

Question 12

A t-test is typically used to:

Accepted Answer

Compare the means of two groups

Question 13

In a chi-square test, expected frequencies should be:

Accepted Answer

Based on the null hypothesis

Question 14

How would you interpret the results of the following test?

Accepted Answer

SBI for new treatment was more than routine but not significantly

Question 15

What does "statistical significance" mean?

Accepted Answer

Results are unlikely due to chance

Question 16

Inferential statistics allow researchers to:

Accepted Answer

Predict population parameters based on sample data

Question 17

SW is exploring relationship between housing status and participation in a substance use program. Which test is best?

Accepted Answer

Chi-square test

Question 18

In regression analysis, the dependent variable is:

Accepted Answer

The variable being predicted

Question 19

Which statistic measures the strength and direction of a linear relationship?

Accepted Answer

Correlation coefficient (r)

Question 20

What is the chi-square test used for?

Accepted Answer

Testing relationships between categorical variables

Question 21

What does ANOVA test for?

Accepted Answer

Differences between more than two group means

Question 22

If ANOVA is significant, what should be done next?

Accepted Answer

Conduct post-hoc tests

Question 23

What does a p-value represent in hypothesis testing?

Accepted Answer

The probability the results are due to chance

Question 24

In a social work experiment, what is the primary purpose of using a control group?

Accepted Answer

To compare the effects of the intervention

Question 25

What is the standard alpha level used in social science research?

Accepted Answer

0.05

Question 26

How would you interpret the results of the following test?

Accepted Answer

There was a significant improvement in test scores after the intervention

Question 27

Which is an example of an inferential statistic?

Accepted Answer

T-test

Question 28

SW examines effectiveness of 2 different counseling approaches on reducing anxiety. Which test should they use?

Accepted Answer

T-test

Research II Final Review

Questions 28

Research II Final Review

Questions 28