Question 1

The purpose of _________ statistics is to describe the dat

Accepted Answer

A) inferential 
B) descriptive 
C) explanatory 
D) none of the above

Question 2

Replication employs a similar, but different, methodology than the original study.

Accepted Answer

A) True 
 B)False

Question 3

When you have one independent variable with two or more levels, an ANOVA is used to look at the results.

Accepted Answer

A) True 
 B)False

Question 4

A researcher rejects the null hypothesis when there is a statistically significant difference between the means of the groups in a study.

Accepted Answer

A) True 
 B)False

Question 5

A researcher rejects the null hypothesis when there is not a statistically significant difference between the means of the groups in a study.

Accepted Answer

A) True 
 B)False

Question 6

Mean, median, and mode are examples of descriptive statistics.

Accepted Answer

A) True 
 B)False

Question 7

A researcher hypothesizes that men will consume more caffeine than women.After the study has concludes, the researcher finds that there is no difference between men and women p >.05).What decision should the researcher make?

Accepted Answer

A) reject the null hypothesis 
B) fail to reject the null hypothesis 
C) accept the null hypothesis 
D) accept the research hypothesis

Question 8

Kathryn has completed a study and failed to reject the null hypothesis when the null hypothesis was false.Kathryn has made a _________.

Accepted Answer

A) correct decision. 
B) a type I error. 
C) a type II error. 
D) a type III error.

Question 9

A __________ distribution is one in which most scores cluster in the center and few, but equal numbers, are on the extremes.

Accepted Answer

A) normal 
B) skewed 
C) research 
D) central

Question 10

It is possible to have more than one mode.

Accepted Answer

A) True 
 B)False

Question 11

A researcher fails to reject the null hypothesis when there is not a statistically significant difference between the means of the groups in a study.

Accepted Answer

A) True 
 B)False

Question 12

Normal distributions are symmetrical.

Accepted Answer

A) True 
 B)False

Question 13

The mode is the most frequently occurring number in a data set.

Accepted Answer

A) True 
 B)False

Question 14

Failing to reject the null hypothesis when it is

Accepted Answer

A) True 
 B)False

Question 15

Inferential statistics are conducted with data sets with skewed distributions.

Accepted Answer

A) True 
 B)False

Question 16

There are _____ possible outcomes to a study.

Accepted Answer

A) two 
B) three 
C) four 
D) unknown

Question 17

The lower the obtained p-value, the less likely the obtained differences in the results are due to chance.

Accepted Answer

A) True 
 B)False

Question 18

Kathryn has completed a study and failed to reject the null when the null hypothesis was true.Kathryn has made a _________.

Accepted Answer

A) correct decision. 
B) a type I error. 
C) a type II error. 
D) a type III error.

Question 19

When do you reject the null hypothesis?

Accepted Answer

A) p  .05 
C) p = .05 
D) p > .01

Question 20

A Type II error occurs when a researcher fails to reject the null hypothesis even though the null hypothesis is false.

Accepted Answer

A) True 
 B)False

Exam 14: Hypothesis Testing Revisited and Interpreting Results

The purpose of _________ statistics is to describe the dat

Replication employs a similar, but different, methodology than the original study.

When you have one independent variable with two or more levels, an ANOVA is used to look at the results.

A researcher rejects the null hypothesis when there is a statistically significant difference between the means of the groups in a study.

A researcher rejects the null hypothesis when there is not a statistically significant difference between the means of the groups in a study.

Mean, median, and mode are examples of descriptive statistics.

A researcher hypothesizes that men will consume more caffeine than women.After the study has concludes, the researcher finds that there is no difference between men and women p >.05) .What decision should the researcher make?

Kathryn has completed a study and failed to reject the null hypothesis when the null hypothesis was false.Kathryn has made a _________.

A __________ distribution is one in which most scores cluster in the center and few, but equal numbers, are on the extremes.

It is possible to have more than one mode.

A researcher fails to reject the null hypothesis when there is not a statistically significant difference between the means of the groups in a study.

Normal distributions are symmetrical.

The mode is the most frequently occurring number in a data set.

Failing to reject the null hypothesis when it is

Inferential statistics are conducted with data sets with skewed distributions.

There are _____ possible outcomes to a study.

The lower the obtained p-value, the less likely the obtained differences in the results are due to chance.

Kathryn has completed a study and failed to reject the null when the null hypothesis was true.Kathryn has made a _________.

When do you reject the null hypothesis?

A Type II error occurs when a researcher fails to reject the null hypothesis even though the null hypothesis is false.