Question 1

Inferential statistics are designed to

Accepted Answer

A)  analyze only normally distributed data. 
B)  summarize large amounts of data. 
C)  analyze only nonparametric data. 
D)  help draw conclusions and interpret data. 
A)  analyze only normally distributed data. 
B)  summarize large amounts of data. 
C)  analyze only nonparametric data. 
D)  help draw conclusions and interpret data.

Question 2

An inverse relationship between two variables will yield a

Accepted Answer

A)  negative correlation. 
B)  positive correlation. 
C)  weak correlation. 
D)  spurious correlation. 
A)  negative correlation. 
B)  positive correlation. 
C)  weak correlation. 
D)  spurious correlation.

Question 3

A table that uses an organized arrangement to indicate how frequently each score or group of scores occurs in a set of data is a

Accepted Answer

A)  frequency polygon. 
B)  histogram. 
C)  frequency distribution. 
D)  frequency table. 
A)  frequency polygon. 
B)  histogram. 
C)  frequency distribution. 
D)  frequency table.

Question 4

Stefan has collected a large amount of data in a study designed to test the effectiveness of a new drug meant to slow the progression of Alzheimer's disease. To organize and summarize his data, which type of statistics would he use?

Accepted Answer

A)  descriptive statistics 
B)  correlational statistics 
C)  normal statistics 
D)  inferential statistics 
A)  descriptive statistics 
B)  correlational statistics 
C)  normal statistics 
D)  inferential statistics

Question 5

It is safe to say that the "bedrock" of the scoring system for most psychological tests is the

Accepted Answer

A)  frequency polygon. 
B)  central tendency. 
C)  correlation coefficient. 
D)  normal distribution. 
A)  frequency polygon. 
B)  central tendency. 
C)  correlation coefficient. 
D)  normal distribution.

Question 6

In a strongly skewed distribution, the best indicator of central tendency is usually the

Accepted Answer

A)  mean. 
B)  median. 
C)  mode. 
D)  standard deviation. 
A)  mean. 
B)  median. 
C)  mode. 
D)  standard deviation.

Question 7

You find a correlation of .44 between a measure of subjects' extraversion and their reports of how many people they have dated in the last two years. This finding means that

Accepted Answer

A)  44 percent of extraverts date a lot. 
B)  extraversion accounts for 44 percent of the variation in the amount of subjects' dating. 
C)  high extraversion is associated with infrequent dating. 
D)  high extraversion is associated with more frequent dating. 
A)  44 percent of extraverts date a lot. 
B)  extraversion accounts for 44 percent of the variation in the amount of subjects' dating. 
C)  high extraversion is associated with infrequent dating. 
D)  high extraversion is associated with more frequent dating.

Question 8

Dr. Trane wants to create a line figure to present her data that would indicate the frequency of each score. Dr. Trane will be MOST likely to use a

Accepted Answer

A)  scatterplot. 
B)  frequency distribution. 
C)  histogram. 
D)  frequency polygon. 
A)  scatterplot. 
B)  frequency distribution. 
C)  histogram. 
D)  frequency polygon.

Question 9

Astin believes that people will be more persuaded by an argument if the person presenting the argument is tall, rather than if the presenter is short. Astin wants to test her belief in an experiment. In this instance, Astin should state her null hypothesis as

Accepted Answer

A)  a presenter's height will have no impact on persuasion. 
B)  a short presenter will be more persuasive than a tall presenter. 
C)  a tall presenter will be less persuasive than a short presenter. 
D)  a tall presenter will be more persuasive than a short presenter. 
A)  a presenter's height will have no impact on persuasion. 
B)  a short presenter will be more persuasive than a tall presenter. 
C)  a tall presenter will be less persuasive than a short presenter. 
D)  a tall presenter will be more persuasive than a short presenter.

Question 10

Al and Carmen have the same bowling average, but Al is much more erratic than Carmen. If we compute the standard deviations for their respective distributions of bowling scores, which of the following will be true?

Accepted Answer

A)  Al's standard deviation will be higher than Carmen's. 
B)  Marilyn's standard deviation will be higher than Al's. 
C)  Both standard deviations will be the same. 
D)  Al's scores will be symmetrical while Carmen's will be positively skewed. 
A)  Al's standard deviation will be higher than Carmen's. 
B)  Marilyn's standard deviation will be higher than Al's. 
C)  Both standard deviations will be the same. 
D)  Al's scores will be symmetrical while Carmen's will be positively skewed.

Question 11

Lydia has designed a study to examine whether a new method of learning historical facts will improve the ability of sixth-grade students to recall such facts. Her prediction that the new method will improve memory is her

Accepted Answer

A)  alternative hypothesis. 
B)  null hypothesis. 
C)  inferential hypothesis. 
D)  research hypothesis. 
A)  alternative hypothesis. 
B)  null hypothesis. 
C)  inferential hypothesis. 
D)  research hypothesis.

Question 12

A histogram is a

Accepted Answer

A)  graph that represents a symmetrical or bell-shaped curve. 
B)  bar graph that presents data from a frequency distribution. 
C)  line figure that presents data from a frequency distribution. 
D)  graph in which paired scores for each subject are plotted as single points. 
A)  graph that represents a symmetrical or bell-shaped curve. 
B)  bar graph that presents data from a frequency distribution. 
C)  line figure that presents data from a frequency distribution. 
D)  graph in which paired scores for each subject are plotted as single points.

Question 13

Toshi has collected data for her research. She wants to create an orderly arrangement of scores that would indicate the frequency of each score; she would be MOST likely to use a

Accepted Answer

A)  scatterplot. 
B)  frequency distribution. 
C)  histogram. 
D)  frequency polygon. 
A)  scatterplot. 
B)  frequency distribution. 
C)  histogram. 
D)  frequency polygon.

Question 14

Which measure of central tendency is obtained by adding all the scores and dividing that total by the number of scores?

Accepted Answer

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

Question 15

Psychological tests are relative measures. It is possible to assess how people score on a trait in comparison to other people using the

Accepted Answer

A)  correlation. 
B)  scatter diagram. 
C)  normal distribution. 
D)  research hypothesis. 
A)  correlation. 
B)  scatter diagram. 
C)  normal distribution. 
D)  research hypothesis.

Question 16

When scores from a personality scale designed to measure agreeableness are plotted, the scores follow a normal distribution. This means that

Accepted Answer

A)  the scores are evenly distributed across the entire range of possible scores. 
B)  people who score high in agreeableness tend to score high in other personality traits. 
C)  people who score high in agreeableness tend to score low in other personality traits. 
D)  most people score near the middle of the scale, and there are fewer people who score extremely high or extremely low in agreeableness. 
A)  the scores are evenly distributed across the entire range of possible scores. 
B)  people who score high in agreeableness tend to score high in other personality traits. 
C)  people who score high in agreeableness tend to score low in other personality traits. 
D)  most people score near the middle of the scale, and there are fewer people who score extremely high or extremely low in agreeableness.

Question 17

Julia has an IQ of 130. If the mean for IQ is 100 with a standard deviation of 15, what percentage of the population has an IQ greater than Julia's (assume a normal distribution)?

Accepted Answer

A)  0 percent 
B)  2.5 percent 
C)  32 percent 
D)  50 percent 
A)  0 percent 
B)  2.5 percent 
C)  32 percent 
D)  50 percent

Question 18

If the correlation between intelligence and college grade point average is .60, then intelligence appears to account for about ____ of the variation in grade point average.

Accepted Answer

A)  40 percent 
B)  36 percent 
C)  60 percent 
D)  90 percent 
A)  40 percent 
B)  36 percent 
C)  60 percent 
D)  90 percent

Question 19

The symmetric, bell shaped curve that represents the pattern in which many human characteristics are dispersed in the population is known as a

Accepted Answer

A)  scatter plot. 
B)  normal distribution. 
C)  frequency polygon. 
D)  histogram. 
A)  scatter plot. 
B)  normal distribution. 
C)  frequency polygon. 
D)  histogram.

Question 20

A graph in which paired X and Y scores for each subject are plotted as single points is called a

Accepted Answer

A)  correlational plot. 
B)  histogram. 
C)  frequency distribution. 
D)  scatter diagram. 
A)  correlational plot. 
B)  histogram. 
C)  frequency distribution. 
D)  scatter diagram.

Exam 35: Statistical Methods

Inferential statistics are designed to

An inverse relationship between two variables will yield a

A table that uses an organized arrangement to indicate how frequently each score or group of scores occurs in a set of data is a

Stefan has collected a large amount of data in a study designed to test the effectiveness of a new drug meant to slow the progression of Alzheimer's disease. To organize and summarize his data, which type of statistics would he use?

It is safe to say that the "bedrock" of the scoring system for most psychological tests is the

In a strongly skewed distribution, the best indicator of central tendency is usually the

You find a correlation of .44 between a measure of subjects' extraversion and their reports of how many people they have dated in the last two years. This finding means that

Dr. Trane wants to create a line figure to present her data that would indicate the frequency of each score. Dr. Trane will be MOST likely to use a

Astin believes that people will be more persuaded by an argument if the person presenting the argument is tall, rather than if the presenter is short. Astin wants to test her belief in an experiment. In this instance, Astin should state her null hypothesis as

Al and Carmen have the same bowling average, but Al is much more erratic than Carmen. If we compute the standard deviations for their respective distributions of bowling scores, which of the following will be true?

Lydia has designed a study to examine whether a new method of learning historical facts will improve the ability of sixth-grade students to recall such facts. Her prediction that the new method will improve memory is her

A histogram is a

Toshi has collected data for her research. She wants to create an orderly arrangement of scores that would indicate the frequency of each score; she would be MOST likely to use a

Which measure of central tendency is obtained by adding all the scores and dividing that total by the number of scores?

Psychological tests are relative measures. It is possible to assess how people score on a trait in comparison to other people using the

When scores from a personality scale designed to measure agreeableness are plotted, the scores follow a normal distribution. This means that

Julia has an IQ of 130. If the mean for IQ is 100 with a standard deviation of 15, what percentage of the population has an IQ greater than Julia's (assume a normal distribution)?

If the correlation between intelligence and college grade point average is .60, then intelligence appears to account for about ____ of the variation in grade point average.

The symmetric, bell shaped curve that represents the pattern in which many human characteristics are dispersed in the population is known as a

A graph in which paired X and Y scores for each subject are plotted as single points is called a

The Evolution of Psychology Part 1

The Evolution of Psychology Part 2

The Research Enterprise in Psychology Part 1

The Research Enterprise in Psychology Part 2

The Biological Bases of Behavior Part 1

The Biological Bases of Behavior Part 2

Sensation and Perception Part 1

Sensation and Perception Part 2

Variations in Consciousness Part 1

Variations in Consciousness Part 2

Learning Part 1

Learning Part 2

Human Memory Part 1

Human Memory Part 2

Language and Thought Part 1

Language and Thought Part 2

Intelligence and Psychological Testing Part 1

Intelligence and Psychological Testing Part 2

Motivation and Emotion Part 1

Motivation and Emotion Part 2

Human Development Across the Life Span Part 1

Human Development Across the Life Span Part 2

Personality: Theory, Research, and Assessment Part 1

Personality: Theory, Research, and Assessment Part 2

Stress, Coping, and Health Part 1

Stress, Coping, and Health Part 2

Psychological Disorders Part 1

Psychological Disorders Part 2

Treatment of Psychological Disorders Part 1

Treatment of Psychological Disorders Part 2

Social Behavior Part 1

Social Behavior Part 2

Careers in Psychology

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