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STAT E-150: Final Exam ReviewPowerPoint Presentation

STAT E-150: Final Exam Review

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### STAT E-150: Final Exam Review

By Kela Roberts

Section Overview

- Questions
- Overview of Tests
- Practice Exam Questions
- Additional Questions

Exam Questions

7. The following questions refer to the SPSS output below. Researchers wanted to investigate a program to help obsessive-compulsive disorder. They randomly selected 13 subjects with the mental illness and measured their percentage of time spent obsessing. This was measured on entrance into the program, and every two months after for 6 months.

Are the assumptions for this test met?

b. Is there a significant effect of obsessive thoughts?

Exam Questions

The following questions refer to the SPSS output below. Researchers wanted to investigate a program to help obsessive-compulsive disorder. They randomly selected 13 subjects with the mental illness and measured their percentage of time spent obsessing. This was measured on entrance into the program, and every two months after for 6 months.

Are the assumptions for this test met?

b. Is there a significant effect of obsessive thoughts?

Exam Questions

The following questions refer to the SPSS output below. Researchers wanted to investigate a program to help obsessive-compulsive disorder. They randomly selected 13 subjects with the mental illness and measured their percentage of time spent obsessing. This was measured on entrance into the program, and every two months after for 6 months.

Are the assumptions for this test met?

b. Is there a significant effect of obsessive thoughts?

Exam Questions

8. Researchers wanted to test whether taking a GMAT prep course would improve subjects' scores on the GMAT. They had students take the GMAT before the prep course, midway through the course, and after the course was over. They then compared their scores.

1. Simple linear regression

2. Multiple regression

3. Logistic regression

4. ANOVA

5. Two-way ANOVA

6. Repeated measures ANOVA

a. Which test would you use?

b. What are the null and alternative hypotheses?

Exam Questions

9. Researchers wanted to investigate how the amount spent on homes purchased in Boston varied by whether it was cape or colonial style, and whether it was sold in the spring, summer, fall, or winter. They randomly selected 120 of the homes sold in the last 2 years and recorded the season and style of the home such that they had 15 colonial and 15 cape houses for each season.

a. What are the factors?

b. How many levels does each factor have?

c. Is each factor observational or experimental?

Exam Questions

9. Researchers wanted to investigate how the amount spent on homes purchased in Boston varied by whether it was cape or colonial style, and whether it was sold in the spring, summer, fall, or winter. They randomly selected 120 of the homes sold in the last 2 years and recorded the season and style of the home such that they had 15 colonial and 15 cape houses for each season.

d. What are the experimental units? What is the population?

e. What are the treatments?

f. Does this study employ factorial crossing?

g. Is it a balanced design?

Exam Questions

Suppose you are interested in knowing the impact on starting salary of a job candidate's educational background and whether or not the job candidate had previous work experience. Educational background was categorized as arts or science/engineering.

Which test would you use?

1. Simple linear regression

2. Multiple regression

3. Logistic regression

4. ANOVA

5. Two-way ANOVA

6. Repeated measures ANOVA

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