Quantitative Methods PSY302 Quiz Chapter 9

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

The End Sampling Error