1. Quantitative Methods PSY302 Quiz Chapter 9

2. 1. The first week of class each of you calculated a:
Mean
Statistic
Standard deviation
A & B

3. 1. The first week of class each of you calculated a:
Mean
Statistic
Standard deviation
A & B

4. 2. Each of you was trying to infer (guess) the population:
Mean
Parameter
Standard deviation
A & B

5. 2. Each of you was trying to infer (guess) the population:
Mean
Parameter
Standard deviation
A & B

6. 3. Each of you guessed wrong due to:
Sloth
Lack of ability in math
Too busy texting
Sampling error
All of the above

7. 3. Each of you guessed wrong due to:
Sloth
Lack of ability in math
Too busy texting
Sampling error
All of the above

8. 4. Assuming these numbers measured the happiness of your client, do these data show that Jasmyn is a better therapist than Victoria?
Yes No

9. 4. Assuming these numbers measured the happiness of your client, do these data show that Jasmyn is a better therapist than Victoria?
Yes No

10. is due to sampling error is due to chance A & B
4. Assuming these numbers measured the happiness of your client, do these data show that Jasmyn is a better therapist than Victoria?
Yes No
5. Why not? The difference
is due to sampling error
is due to chance
A & B

11. is due to sampling error is due to chance A & B
4. Assuming these numbers measured the happiness of your client, do these data show that Jasmyn is a better therapist than Victoria?
Yes No
5. Why not? The difference
is due to sampling error
is due to chance
A & B

12. 6. If research finding is statistically significant that means:
It is important
It probably did not occur by chance
It has been published in a peer review journal
It is a good study

13. 6. If research finding is statistically significant that means:
It is important
It probably did not occur by chance
It has been published in a peer review journal
It is a good study

14. 7. The null hypothesis (Ho) states:
That the study is poorly designed
That the results occurred by chance
That the study is important, meaningful
That the mean is greater than the standard deviation

15. 7. The null hypothesis (Ho) states:
That the study is poorly designed
That the results occurred by chance
That the study is important, meaningful
That the mean is greater than the standard deviation

16. 8. The probability of obtaining a value as extreme or more extreme than the observed statistic is called the.
Hypotenuse
P-Value
Sum of squares
Frequency distribution
All of the above

17. 8. The probability of obtaining a value as extreme or more extreme than the observed statistic is called the.
Hypotenuse
P-Value
Sum of squares
Frequency distribution
All of the above

18. 9. The target P-value is referred to as ____. It is usually set at .05
Chi square
Alpha
The standard error α
B & D

19. 9. The target P-value is referred to as ____. It is usually set at .05
Chi square
Alpha
The standard error α
B & D

20. 10. We say results are statistically significant when:
We know we are right
Have important outcome measures
We are able to reject the null hypothesis
The results conform to our hypothesis
When we have measurement data

21. 10. We say results are statistically significant when:
We know we are right
Have important outcome measures
We are able to reject the null hypothesis
The results conform to our hypothesis
When we have measurement data

22. Bonus. We can reject the null hypothesis when:
The p-value is less than alpha
When the mean square is small
When alpha is greater than .05
When we have categorical data
We are confident of our results

23. Bonus. We can reject the null hypothesis when:
The p-value is less than alpha
When the mean square is small
When alpha is greater than .05
When we have categorical data
We are confident of our results

24. The End
Sampling Error