Question 1

A symmetrical, bell-shaped curve is known as a

Accepted Answer

A)  bimodal distribution. 
B)  positively skewed distribution. 
C)  negatively skewed distribution. 
D)  normal distribution. 
A)  bimodal distribution. 
B)  positively skewed distribution. 
C)  negatively skewed distribution. 
D)  normal distribution.

Question 2

The value of a correlation coefficient can range from ____ to _____.

Accepted Answer

A)  0; +1 
B)  -1; 0 
C)  -1; +1 
D)  -10; +10 
A)  0; +1 
B)  -1; 0 
C)  -1; +1 
D)  -10; +10

Question 3

Which of the following would be considered a medium effect size?

Accepted Answer

A)  d = .20 
B)  d = .40 
C)  d = .70 
D)  d = .80 
A)  d = .20 
B)  d = .40 
C)  d = .70 
D)  d = .80

Question 4

What is effect size? Why is it important?

Accepted Answer

Effect size is a statistical measure tha

Question 5

Define inferential statistics. What is the purpose of inferential statistics?

Accepted Answer

Inferential statistics is a branch of st

Question 6

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

Accepted Answer

The mean is calculated by adding up all

Question 7

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

Accepted Answer

The median is calculated by arranging a

Question 8

A bar graph can be used for _________ categories.

Accepted Answer

A)  quantitative 
B)  qualitative 
C)  quantitative or qualitative 
D)  neither quantitative nor qualitative 
A)  quantitative 
B)  qualitative 
C)  quantitative or qualitative 
D)  neither quantitative nor qualitative

Question 9

Consider the following scores: 1, 1, 2, 2, 3, 3, 3. What is the median?

Accepted Answer

A)  2 
B)  3 
C)  2.14 
D)  15 
A)  2 
B)  3 
C)  2.14 
D)  15

Question 10

Researchers frequently present the results of an experiment in a

Accepted Answer

A)  line graph. 
B)  histogram. 
C)  pie chart. 
D)  frequency polygon. 
A)  line graph. 
B)  histogram. 
C)  pie chart. 
D)  frequency polygon.

Question 11

Suppose in your English class, you earned a 70 on the first test (the class mean was 65 with SD = 3). In Math, you earned a 70 on the first test (the class mean was 65 with SD = 5). In Economics, you earned a 70 on the first test (the class mean was 65 with SD = 2). In which class did you do the best relative to the other students in the class?

Accepted Answer

A)  English 
B)  Math 
C)  Economics 
D)  You did the same in all three classes relative to the other students. 
A)  English 
B)  Math 
C)  Economics 
D)  You did the same in all three classes relative to the other students.

Question 12

Leo randomly assigns half of his participants to read a neutral paragraph and half to read a biased paragraph. Participants rate the extent to which they liked the paragraph. Which kind of graph should he use to depict his results?

Accepted Answer

A)  Histogram 
B)  Polygon 
C)  Line graph 
D)  Pie chart 
A)  Histogram 
B)  Polygon 
C)  Line graph 
D)  Pie chart

Question 13

The mode can be used for variables measured using _________ scale of measurement.

Accepted Answer

A)  nominal 
B)  ordinal 
C)  ratio 
D)  All of the above. 
A)  nominal 
B)  ordinal 
C)  ratio 
D)  All of the above.

Question 14

Consider the following amounts that were donated to charity: $1, $1, $1, $5, $10, $10, $100. What would be the best measure of central tendency in this case?

Accepted Answer

A)  Mean 
B)  Mode 
C)  Median 
D)  Standard deviation 
A)  Mean 
B)  Mode 
C)  Median 
D)  Standard deviation

Question 15

Which of the following accurately depicts a normal distribution?

Accepted Answer

A)  Most scores occur in the extreme ends of the distribution and few scores occur in the middle. 
B)  Most scores cluster on the right-hand side of the graph, with fewer scores on the left-hand side. 
C)  Most scores cluster on the left-hand side of the graph, with fewer scores on the right-hand side. 
D)  Most scores cluster in the middle, with fewer scores as you move away from the middle. 
A)  Most scores occur in the extreme ends of the distribution and few scores occur in the middle. 
B)  Most scores cluster on the right-hand side of the graph, with fewer scores on the left-hand side. 
C)  Most scores cluster on the left-hand side of the graph, with fewer scores on the right-hand side. 
D)  Most scores cluster in the middle, with fewer scores as you move away from the middle.

Question 16

What is the range? What is one advantage of computing the range? What is one disadvantage of computing the range?

Accepted Answer

The range is a statistical measure that

Question 17

A correlation of ___ indicates a perfect negative relationship between two variables.

Accepted Answer

A)  0 
B)  1 
C)  -1 
D)  -.5 
A)  0 
B)  1 
C)  -1 
D)  -.5

Question 18

Pam records responses on a questionnaire as either "agree" or "disagree." This represents a(n) ____________ scale of measurement.

Accepted Answer

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

A symmetrical, bell-shaped curve is known as a

The value of a correlation coefficient can range from to _.

Which of the following would be considered a medium effect size?

What is effect size? Why is it important?

Define inferential statistics. What is the purpose of inferential statistics?

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

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

A bar graph can be used for _________ categories.

Consider the following scores: 1, 1, 2, 2, 3, 3, 3. What is the median?

Researchers frequently present the results of an experiment in a

Leo randomly assigns half of his participants to read a neutral paragraph and half to read a biased paragraph. Participants rate the extent to which they liked the paragraph. Which kind of graph should he use to depict his results?

The mode can be used for variables measured using _________ scale of measurement.

Consider the following amounts that were donated to charity: $1, $1, $1, $5, $10, $10, $100. What would be the best measure of central tendency in this case?

Which of the following accurately depicts a normal distribution?

What is the range? What is one advantage of computing the range? What is one disadvantage of computing the range?

A correlation of ___ indicates a perfect negative relationship between two variables.

Pam records responses on a questionnaire as either "agree" or "disagree." This represents a(n) ____________ scale of measurement.

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

A symmetrical, bell-shaped curve is known as a

The value of a correlation coefficient can range from ____ to _____.

Which of the following would be considered a medium effect size?

What is effect size? Why is it important?

Define inferential statistics. What is the purpose of inferential statistics?

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

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

A bar graph can be used for _________ categories.

Consider the following scores: 1, 1, 2, 2, 3, 3, 3. What is the median?

Researchers frequently present the results of an experiment in a

Leo randomly assigns half of his participants to read a neutral paragraph and half to read a biased paragraph. Participants rate the extent to which they liked the paragraph. Which kind of graph should he use to depict his results?

The mode can be used for variables measured using _________ scale of measurement.

Consider the following amounts that were donated to charity: $1, $1, $1, $5, $10, $10, $100. What would be the best measure of central tendency in this case?

Which of the following accurately depicts a normal distribution?

What is the range? What is one advantage of computing the range? What is one disadvantage of computing the range?

A correlation of ___ indicates a perfect negative relationship between two variables.

Pam records responses on a questionnaire as either "agree" or "disagree." This represents a(n) ____________ scale of measurement.

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

The value of a correlation coefficient can range from to _.