Question 1

One limitation of the range is that

Accepted Answer

A)  it only uses the extreme scores and so does not tell us how variable the scores are between those extreme scores. 
B)  it can only be calculated when the variable is measured on a nominal scale of measurement. 
C)  calculation of the range increases our risk of a Type I error. 
D)  calculation of the range increases our risk of a Type II error. 
A)  it only uses the extreme scores and so does not tell us how variable the scores are between those extreme scores. 
B)  it can only be calculated when the variable is measured on a nominal scale of measurement. 
C)  calculation of the range increases our risk of a Type I error. 
D)  calculation of the range increases our risk of a Type II error.

Question 2

What is variance and standard deviation? How does standard deviation relate to the normal distribution?

Accepted Answer

Variance is a measure of how much the va

Question 3

To find the _______, subtract the smallest score from the largest score.

Accepted Answer

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

Question 4

Temperature in Fahrenheit represents a(n) __________ scale of measurement.

Accepted Answer

A)  ordinal 
B)  interval 
C)  ratio 
D)  nominal 
A)  ordinal 
B)  interval 
C)  ratio 
D)  nominal

Question 5

What is a frequency polygon? Under what circumstances do researchers use a frequency polygon? Draw a sample frequency polygon.

Accepted Answer

A frequency polygon is a type of graph t

Question 6

Accepting the null hypothesis when the experimental hypothesis is true is called a(n) _________ error.

Accepted Answer

A)  Type I 
B)  Type II 
C)  experimental 
D)  null 
A)  Type I 
B)  Type II 
C)  experimental 
D)  null

Question 7

What is the first step in calculating the median?

Accepted Answer

A)  Add up all the scores. 
B)  Locate the most frequently occurring score. 
C)  Count the number of scores. 
D)  Rank order the scores from lowest to highest. 
A)  Add up all the scores. 
B)  Locate the most frequently occurring score. 
C)  Count the number of scores. 
D)  Rank order the scores from lowest to highest.

Question 8

How is the mode calculated? Under what circumstances do researchers use the mode instead of the median or the mean?

Accepted Answer

The mode is calculated by finding the va

Question 9

Which of the following is NOT a measure of variability?

Accepted Answer

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

Question 10

Measures of _____________ refer to the typical or representative score.

Accepted Answer

A)  variability 
B)  central tendency 
C)  inferential statistics 
D)  Type I errors 
A)  variability 
B)  central tendency 
C)  inferential statistics 
D)  Type I errors

Question 11

When a one-tailed test is used, the region for rejection is _________ than when a two-tailed test is used.

Accepted Answer

A)  larger 
B)  smaller 
C)  the same as 
D)  None of the above. 
A)  larger 
B)  smaller 
C)  the same as 
D)  None of the above.

Question 12

Which of the following is NOT a measure of central tendency?

Accepted Answer

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

Question 13

Draw a normal distribution. Locate the mean, median, and mode. Enter the percentages associated with the area between 0 and 1 SD from the mean (both above and below the mean). Enter the percentages associated with the area between 1 and 2 SD from the mean (both above and below the mean). Finally, enter the percentages associated with the area between 2 and 3 SD from the mean (both above and below the mean). Why are there different percentages as you get farther from the mean?

Accepted Answer

A normal distribution is a bell-shaped c

Question 14

A scale of measurement that permits events to be rank ordered is

Accepted Answer

A)  nominal. 
B)  interval. 
C)  ordinal. 
D)  ratio. 
A)  nominal. 
B)  interval. 
C)  ordinal. 
D)  ratio.

Question 15

Which of the following can help minimize Type II errors?

Accepted Answer

A)  Decrease the sample size 
B)  Increase the sample size 
C)  Use one dependent variable instead of several 
D)  Use convenience sampling instead of random sampling 
A)  Decrease the sample size 
B)  Increase the sample size 
C)  Use one dependent variable instead of several 
D)  Use convenience sampling instead of random sampling

Question 16

The _______ hypothesis states that all differences between groups are due to chance.

Accepted Answer

A)  alternative 
B)  research 
C)  statistical 
D)  null 
A)  alternative 
B)  research 
C)  statistical 
D)  null

Question 17

If our statistical results occurs rarely by chance, we conclude that it is

Accepted Answer

A)  significant. 
B)  not significant. 
C)  proven. 
D)  not proven. 
A)  significant. 
B)  not significant. 
C)  proven. 
D)  not proven.

Question 18

A graph in which the frequency for each category of a qualitative variable is represented as a vertical column that does not touch the adjacent column is called a

Accepted Answer

A)  pie chart. 
B)  histogram. 
C)  line graph. 
D)  bar graph. 
A)  pie chart. 
B)  histogram. 
C)  line graph. 
D)  bar graph.

Question 19

What is the null hypothesis? Under what circumstances do we reject the null hypothesis? Under what circumstances do we accept the null hypothesis?

Accepted Answer

The null hypothesis is a statement that

Question 20

Which measure of central tendency is favored by most psychologists?

Accepted Answer

A)  Median 
B)  Mean 
C)  Mode 
D)  Variance 
A)  Median 
B)  Mean 
C)  Mode 
D)  Variance

One limitation of the range is that

What is variance and standard deviation? How does standard deviation relate to the normal distribution?

To find the _______, subtract the smallest score from the largest score.

Temperature in Fahrenheit represents a(n) __________ scale of measurement.

What is a frequency polygon? Under what circumstances do researchers use a frequency polygon? Draw a sample frequency polygon.

Accepting the null hypothesis when the experimental hypothesis is true is called a(n) _________ error.

What is the first step in calculating the median?

How is the mode calculated? Under what circumstances do researchers use the mode instead of the median or the mean?

Which of the following is NOT a measure of variability?

Measures of _____________ refer to the typical or representative score.

When a one-tailed test is used, the region for rejection is _________ than when a two-tailed test is used.

Which of the following is NOT a measure of central tendency?

A scale of measurement that permits events to be rank ordered is

Which of the following can help minimize Type II errors?

The _______ hypothesis states that all differences between groups are due to chance.

If our statistical results occurs rarely by chance, we conclude that it is

A graph in which the frequency for each category of a qualitative variable is represented as a vertical column that does not touch the adjacent column is called a

What is the null hypothesis? Under what circumstances do we reject the null hypothesis? Under what circumstances do we accept the null hypothesis?

Which measure of central tendency is favored by most psychologists?

Psychological Research and the Research Methods Course

Developing a Good Research Idea and Conducting an Ethical Project

Qualitative Research Methods

Nonexperimental Methods: Descriptive Methods, Correlational Studies, Ex Post Facto Studies, Surveys and Questionnaires, Sampling, and Basic Research Strategies

Using the Scientific Method in Psychology

Conducting a Good Experiment I: Variables and Control

Conducting a Good Experiment Ii: Final Considerations, Unanticipated Influences, and Cross-Cultural Issues

Internal and External Validity

Designing, Conducting, Analyzing, and Interpreting Experiments With Two Groups

Designing, Conducting, Analyzing, and Interpreting Experiments With More Than Two Groups

Designing, Conducting, Analyzing, and Interpreting Experiments With Multiple Independent Variables

Alternative Research Designs

Writing and Assembling an Apa-Format Research Report

Filters

Exam 9: Using Statistics to Answer Questions

One limitation of the range is that

What is variance and standard deviation? How does standard deviation relate to the normal distribution?

To find the _______, subtract the smallest score from the largest score.

Temperature in Fahrenheit represents a(n) __________ scale of measurement.

What is a frequency polygon? Under what circumstances do researchers use a frequency polygon? Draw a sample frequency polygon.

Accepting the null hypothesis when the experimental hypothesis is true is called a(n) _________ error.

What is the first step in calculating the median?

How is the mode calculated? Under what circumstances do researchers use the mode instead of the median or the mean?

Which of the following is NOT a measure of variability?

Measures of _____________ refer to the typical or representative score.

When a one-tailed test is used, the region for rejection is _________ than when a two-tailed test is used.

Which of the following is NOT a measure of central tendency?

A scale of measurement that permits events to be rank ordered is

Which of the following can help minimize Type II errors?

The _______ hypothesis states that all differences between groups are due to chance.

If our statistical results occurs rarely by chance, we conclude that it is

A graph in which the frequency for each category of a qualitative variable is represented as a vertical column that does not touch the adjacent column is called a

What is the null hypothesis? Under what circumstances do we reject the null hypothesis? Under what circumstances do we accept the null hypothesis?

Which measure of central tendency is favored by most psychologists?

Psychological Research and the Research Methods Course

Developing a Good Research Idea and Conducting an Ethical Project

Qualitative Research Methods

Nonexperimental Methods: Descriptive Methods, Correlational Studies, Ex Post Facto Studies, Surveys and Questionnaires, Sampling, and Basic Research Strategies

Using the Scientific Method in Psychology

Conducting a Good Experiment I: Variables and Control

Conducting a Good Experiment Ii: Final Considerations, Unanticipated Influences, and Cross-Cultural Issues

Internal and External Validity

Designing, Conducting, Analyzing, and Interpreting Experiments With Two Groups

Designing, Conducting, Analyzing, and Interpreting Experiments With More Than Two Groups

Designing, Conducting, Analyzing, and Interpreting Experiments With Multiple Independent Variables

Alternative Research Designs

Writing and Assembling an Apa-Format Research Report

Filters