1. Statistics PSY302 Regression Quiz

2. 1. The symbol used to represent the population correlation coefficient is:Σ Μ β α ρ

3. 1. The symbol used to represent the population correlation coefficient is:Σ Μ β α ρ

4. 2. When using correlation we have an alpha level of:
.10
.05
.0005
5.0
All of the above

5. 2. When using correlation we have an alpha level of:
.10
.05
.0005
5.0
All of the above

6. 3. Correlations work only when you are dealing with ___.
Causes
Associations
Categories
Chi Squares
Qualitative data

7. 3. Correlations work only when you are dealing with ___.
Causes
Associations
Categories
Chi Squares
Qualitative data

8. 4. Regression is all about:
Finding causal relationships
Understanding the reason for observed findings
Prediction
Determining the difference between measurement and categorical data
Making ad hoc comparisons in Chi Square

9. 4. Regression is all about:
Finding causal relationships
Understanding the reason for observed findings
Prediction
Determining the difference between measurement and categorical data
Making ad hoc comparisons in Chi Square

10. 5. The higher the absolute value of the correlation coefficient the ____ the prediction.
Worse
More accurate
More confusing
Less confident
All of the above

11. 5. The high the absolute value of the correlation coefficient the ____ the prediction.
Worse
More accurate
More confusing
Less confident
All of the above

12. 6. To predict college gpa from high school gpa we create a regression equation in order to plot:
A regression line
A histogram
Causal relationship
Categorical data
A pie chart

13. 6. To predict college gpa from high school gpa we create a regression equation in order to plot:
A regression line
A histogram
Causal relationship
Categorical data
A pie chart

14. 7. In regression we are predicting the value of one variable called Y based on another variable called:
Delta X
Chi Square
Nancy
All of the above

15. 7. In regression we are predicting the value of one variable called Y based on another variable called:
Delta X
Chi Square
Nancy
All of the above

16. 8.The Variable we are predicting is called the ____ or dependent variable.
Standard deviation
Mean square
Criterion
Independent variable
Chi Square

17. 8.The Variable we are predicting is called the ____ or dependent variable.
Standard deviation
Mean square
Criterion
Independent variable
Chi Square

18. 9. We use X, also called the _____ to predict the value of Y.
Hypotenuse
Standard error
Predictor
Correlation
Alpha level

19. 9. We use X, also called the _____ to predict the value of Y.
Hypotenuse
Standard error
Predictor
Correlation
Alpha level

20. 10. Beta or b is the: Predictor Correlation coefficient Chi square
Alpha level
Slope

21. 10. Beta or b is the: Predictor Correlation coefficient Chi square
Alpha level
Slope

22. 11. The obtained statistic for a t-test is the t score, for a Chi Square test it is Chi Square. For Regression it is:
Beta the Slope
The sum of X
Standard deviation
The sum of squares
All of the above.

23. 11. The obtained statistic for a t-test is the t score, for a Chi Square test it is Chi Square. For Regression it is:
Beta the Slope
The sum of X
Standard deviation
The sum of squares
All of the above.

24. Bonus: Did you hear the joke about the statistician who drowned while wading across a river whose average depth was three feet? What did the statistician forget to take into account?
The standard deviation
The correlation coefficient
The median
Inferential statistics

25. The standard deviation
Bonus: Did you hear the joke about the statistician who drowned while wading across a river whose average depth was three feet? What did the statistician forget to take into account?
The standard deviation
The correlation coefficient
The median
Inferential statistics

26. The End