Question 1

The difference between the highest and lowest scores in a distribution is the ______.

Accepted Answer

A)  range 
B)  mean 
C)  mode 
D)  median 
A)  range 
B)  mean 
C)  mode 
D)  median A

Question 2

Use the following description for questions : An experiment was conducted to test the hypothesis that exercise affects memory in the elderly. Subjects aged 60 and older were recruited for the study. All of the subjects were presented with the same study list. Then half of the subjects were asked to walk on a treadmill for 20 minutes, while the other half of the subjects were asked to complete Sudoku puzzles for 20 minutes. Then all subjects were given a recognition test for the items in the study list. The treadmill exercise group scored significantly lower on the recognition test than the Sudoku puzzle group.
-Based on the results reported above and an alpha level of .05, the ______ p value is possible for the test comparing the groups in this study.

Accepted Answer

A)  .085 
B)  .85 
C)  1.85 
D)  .008 
A)  .085 
B)  .85 
C)  1.85 
D)  .008 D

Question 3

The ______ ignores all the scores between the most extreme scores and therefore is a crude measure of variability.

Accepted Answer

A)  mean 
B)  range 
C)  standard deviation 
D)  variance 
A)  mean 
B)  range 
C)  standard deviation 
D)  variance B

Question 4

A graph showing the relationship between two dependent variables for a group of individuals is called a ______.

Accepted Answer

A)  frequency distribution 
B)  line graph 
C)  scatterplot 
D)  bar graph 
A)  frequency distribution 
B)  line graph 
C)  scatterplot 
D)  bar graph

Question 5

As researchers, we usually set alpha at .05 because ______.

Accepted Answer

A)  this allows us to remove all error from our statistical test 
B)  this sets our Type I error rate at 5% 
C)  this sets our Type II error rate at 95% 
D)  this sets our Type I error rate at 95% 
A)  this allows us to remove all error from our statistical test 
B)  this sets our Type I error rate at 5% 
C)  this sets our Type II error rate at 95% 
D)  this sets our Type I error rate at 95%

Question 6

If we reject the null hypothesis when it's really true, we have made a ______.

Accepted Answer

A)  correct decision 
B)  Type I error 
C)  Type II error 
D)  Type I and Type II errors 
A)  correct decision 
B)  Type I error 
C)  Type II error 
D)  Type I and Type II errors

Question 7

The degree of freedom is the most commonly reported measure of central tendency.

Accepted Answer

A) True 
 B)False

Question 8

In a research study the p value obtained for the inferential statistic is .08. This means that ______.

Accepted Answer

A)  there is an 8% chance of obtaining these data when the null hypothesis is false 
B)  there is an 8% chance of obtaining these data when the null hypothesis is true 
C)  there is a 92% chance of obtaining these data when the null hypothesis is true 
D)  there is a 92% chance of obtaining these data when the null hypothesis is false 
A)  there is an 8% chance of obtaining these data when the null hypothesis is false 
B)  there is an 8% chance of obtaining these data when the null hypothesis is true 
C)  there is a 92% chance of obtaining these data when the null hypothesis is true 
D)  there is a 92% chance of obtaining these data when the null hypothesis is false

Question 9

A researcher is conducting a study to test the hypothesis that viewing family photos (as compared with viewing photos of strangers) prompts more autobiographical memories. State the null and alternative hypotheses for this study.

Accepted Answer

Answers vary
Null: Viewing family photos

Question 10

The ______ is the most commonly reported measure of central tendency.

Accepted Answer

A)  mean 
B)  range 
C)  mode 
D)  median 
A)  mean 
B)  range 
C)  mode 
D)  median

Question 11

A graph of a distribution showing the frequency of each response in the distribution is called a ______.

Accepted Answer

A)  frequency distribution 
B)  line graph 
C)  scatterplot 
D)  bar graph 
A)  frequency distribution 
B)  line graph 
C)  scatterplot 
D)  bar graph

Question 12

High or low extreme scores pull the ______ toward the top or bottom of the distribution's range.

Accepted Answer

A)  mean 
B)  range 
C)  mode 
D)  median 
A)  mean 
B)  range 
C)  mode 
D)  median

Question 13

Use the following description for questions : An experiment was conducted to test the hypothesis that exercise affects memory in the elderly. Subjects aged 60 and older were recruited for the study. All of the subjects were presented with the same study list. Then half of the subjects were asked to walk on a treadmill for 20 minutes, while the other half of the subjects were asked to complete Sudoku puzzles for 20 minutes. Then all subjects were given a recognition test for the items in the study list. The treadmill exercise group scored significantly lower on the recognition test than the Sudoku puzzle group.
-Of the following, ______ cannot explain the results of this study.

Accepted Answer

A)  exercise decreases memory abilities 
B)  more subjects with better memory were assigned to the Sudoku group than the exercise group 
C)  subjects in the exercise group paid l attention to the study list than subjects in the Sudoku group 
D)  exercise increases memory abilities 
A)  exercise decreases memory abilities 
B)  more subjects with better memory were assigned to the Sudoku group than the exercise group 
C)  subjects in the exercise group paid l attention to the study list than subjects in the Sudoku group 
D)  exercise increases memory abilities

Question 14

The basic measures of central tendency of a distribution are: the mean, the median, and the range.

Accepted Answer

A) True 
 B)False

Question 15

The null hypothesis is the opposite hypothesis to the scientific or alternative hypothesis.

Accepted Answer

A) True 
 B)False

Question 16

In inferential statistics, we look for evidence against the ______.

Accepted Answer

A)  alternative hypothesis 
B)  scientific hypothesis 
C)  independent variable hypothesis 
D)  null hypothesis 
A)  alternative hypothesis 
B)  scientific hypothesis 
C)  independent variable hypothesis 
D)  null hypothesis

Question 17

A distribution is a(n) ______.

Accepted Answer

A)  descriptive statistic 
B)  inferential statistic 
C)  value that represents a typical score 
D)  set of scores 
A)  descriptive statistic 
B)  inferential statistic 
C)  value that represents a typical score 
D)  set of scores

Question 18

Explain why it is necessary to set an alpha level of an inferential test.

Accepted Answer

Answers vary
An alpha must be set to det

Question 19

The ______ indicates the most common score in a distribution.

Accepted Answer

A)  range 
B)  standard deviation 
C)  mode 
D)  median 
A)  range 
B)  standard deviation 
C)  mode 
D)  median

Question 20

Correlation indicates a typical score in the distribution of collected scores.

Accepted Answer

A) True 
 B)False

The difference between the highest and lowest scores in a distribution is the ______.

The ______ ignores all the scores between the most extreme scores and therefore is a crude measure of variability.

A graph showing the relationship between two dependent variables for a group of individuals is called a ______.

As researchers, we usually set alpha at .05 because ______.

If we reject the null hypothesis when it's really true, we have made a ______.

The degree of freedom is the most commonly reported measure of central tendency.

In a research study the p value obtained for the inferential statistic is .08. This means that ______.

A researcher is conducting a study to test the hypothesis that viewing family photos (as compared with viewing photos of strangers) prompts more autobiographical memories. State the null and alternative hypotheses for this study.

The ______ is the most commonly reported measure of central tendency.

A graph of a distribution showing the frequency of each response in the distribution is called a ______.

High or low extreme scores pull the ______ toward the top or bottom of the distribution's range.

The basic measures of central tendency of a distribution are: the mean, the median, and the range.

The null hypothesis is the opposite hypothesis to the scientific or alternative hypothesis.

In inferential statistics, we look for evidence against the ______.

A distribution is a(n) ______.

Explain why it is necessary to set an alpha level of an inferential test.

The ______ indicates the most common score in a distribution.

Correlation indicates a typical score in the distribution of collected scores.

Psychological Research: the Whys and Hows of the Scientific Method

Hypothesis Development: Where Research Questions Come From

Ethical Guidelines for Psychological Research

How Psychologists Use the Scientific Method: Data Collection Techniques and Research Designs

Variables and Measurement in Research

Sampling

Reporting Research

More About Using Statistics

More About Survey Research

More About Correlational Studies

More About One-Factor Experiments

More About Multi-Factor Experiments

More About Quasi-Experiments

More About Other Specialized Designs

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Exam 7: Summarizing and Interpreting Data: Using Statistics

The difference between the highest and lowest scores in a distribution is the ______.

The ______ ignores all the scores between the most extreme scores and therefore is a crude measure of variability.

A graph showing the relationship between two dependent variables for a group of individuals is called a ______.

As researchers, we usually set alpha at .05 because ______.

If we reject the null hypothesis when it's really true, we have made a ______.

The degree of freedom is the most commonly reported measure of central tendency.

In a research study the p value obtained for the inferential statistic is .08. This means that ______.

A researcher is conducting a study to test the hypothesis that viewing family photos (as compared with viewing photos of strangers) prompts more autobiographical memories. State the null and alternative hypotheses for this study.

The ______ is the most commonly reported measure of central tendency.

A graph of a distribution showing the frequency of each response in the distribution is called a ______.

High or low extreme scores pull the ______ toward the top or bottom of the distribution's range.

The basic measures of central tendency of a distribution are: the mean, the median, and the range.

The null hypothesis is the opposite hypothesis to the scientific or alternative hypothesis.

In inferential statistics, we look for evidence against the ______.

A distribution is a(n) ______.

Explain why it is necessary to set an alpha level of an inferential test.

The ______ indicates the most common score in a distribution.

Correlation indicates a typical score in the distribution of collected scores.

Psychological Research: the Whys and Hows of the Scientific Method

Hypothesis Development: Where Research Questions Come From

Ethical Guidelines for Psychological Research

How Psychologists Use the Scientific Method: Data Collection Techniques and Research Designs

Variables and Measurement in Research

Sampling

Reporting Research

More About Using Statistics

More About Survey Research

More About Correlational Studies

More About One-Factor Experiments

More About Multi-Factor Experiments

More About Quasi-Experiments

More About Other Specialized Designs

Filters