Question 1

A small,randomly-selected part of a larger population that accurately reflects characteristics of the whole population is a __________sample.

Accepted Answer

A)  representative 
B)  correlational 
C)  significant 
D)  variant 
A)  representative 
B)  correlational 
C)  significant 
D)  variant

Question 2

Which of the following would tell us the percentage of variance in one variable that can be accounted for by knowing the other variable?

Accepted Answer

A)  r. 
B)  SD. 
C)  r  r. 
D)  z-score. 
A)  r. 
B)  SD. 
C)  r  r. 
D)  z-score.

Question 3

The relationship between young children's height and weight would represent a

Accepted Answer

A)  nominal scale. 
B)  positive correlation. 
C)  negative correlation. 
D)  zero correlation. 
A)  nominal scale. 
B)  positive correlation. 
C)  negative correlation. 
D)  zero correlation.

Question 4

Experiments allow us to

Accepted Answer

A)  determine causation. 
B)  nullify a z-score. 
C)  demonstrate percent of variance. 
D)  verify extraneous variables. 
A)  determine causation. 
B)  nullify a z-score. 
C)  demonstrate percent of variance. 
D)  verify extraneous variables.

Question 5

Behavioral variables found in the population often form a normal curve,which is described as which type of distribution?

Accepted Answer

A)  z-shaped 
B)  t-shaped 
C)  s-shaped 
D)  bell-shaped 
A)  z-shaped 
B)  t-shaped 
C)  s-shaped 
D)  bell-shaped

Question 6

On a normal curve,99 percent of all the cases would be found between which two SDs?

Accepted Answer

A)  0 and +3 
B)  -1 and +2 
C)  -2 and +2 
D)  -3 and +3 
A)  0 and +3 
B)  -1 and +2 
C)  -2 and +2 
D)  -3 and +3

Question 7

If the mean on a test is 100 and the standard deviation is 15,a person with a z-score of +1.0 scored which of the following on the test?

Accepted Answer

A)  70 
B)  85 
C)  115 
D)  130 
A)  70 
B)  85 
C)  115 
D)  130

Question 8

After administering a unit test to her psychology students,a college professor calculates the mean and range for this test in order to better understand the performance of her students on the material in this unit.This professor is using __________statistics.

Accepted Answer

A)  descriptive 
B)  inferential 
C)  nominal 
D)  ordinal 
A)  descriptive 
B)  inferential 
C)  nominal 
D)  ordinal

Question 9

Gabe had a score of 70 in a class with a mean of 80 and a standard deviation of 10.His z-score is

Accepted Answer

A)  +2.0. 
B)  +1.0. 
C)  -1.0. 
D)  -2.0. 
A)  +2.0. 
B)  +1.0. 
C)  -1.0. 
D)  -2.0.

Question 10

A perfect negative relationship has a coefficient of correlation of

Accepted Answer

A)  0.00 
B)  +1.00 
C)  -1.00 
D)  none of these. 
A)  0.00 
B)  +1.00 
C)  -1.00 
D)  none of these.

Question 11

The distribution depicted below is a

Accepted Answer

A)  histogram. 
B)  positive skew. 
C)  negative skew. 
D)  normal curve. 
A)  histogram. 
B)  positive skew. 
C)  negative skew. 
D)  normal curve.

Question 12

The range is a measure of

Accepted Answer

A)  central tendency. 
B)  variability. 
C)  correlation. 
D)  equilibrium. 
A)  central tendency. 
B)  variability. 
C)  correlation. 
D)  equilibrium.

Question 13

A single number that describes a "middle score" is a(n)

Accepted Answer

A)  inferential statistic. 
B)  frequency distribution. 
C)  z-score. 
D)  measure of central tendency. 
A)  inferential statistic. 
B)  frequency distribution. 
C)  z-score. 
D)  measure of central tendency.

Question 14

The scatter diagram below depicts which type of relationship?

Accepted Answer

A)  zero correlation. 
B)  positive relationship. 
C)  variable relationship. 
D)  negative relationship. 
A)  zero correlation. 
B)  positive relationship. 
C)  variable relationship. 
D)  negative relationship.

Question 15

Regarding frequency distributions,which of the following statements is FALSE?

Accepted Answer

A)  The entire range of possible scores is broken down into classes of equal size. 
B)  Scores are often expressed graphically to make them more "visual." 
C)  Scores are listed in random order. 
D)  Large amounts of numerical information can be clearly organized. 
A)  The entire range of possible scores is broken down into classes of equal size. 
B)  Scores are often expressed graphically to make them more "visual." 
C)  Scores are listed in random order. 
D)  Large amounts of numerical information can be clearly organized.

Question 16

If you square the correlational coefficient,you will get a number telling the

Accepted Answer

A)  percent of variance accounted for by the correlation. 
B)  standard deviations accounted for by the correlation. 
C)  statistical significance of the measure. 
D)  amount of causation between the two variables. 
A)  percent of variance accounted for by the correlation. 
B)  standard deviations accounted for by the correlation. 
C)  statistical significance of the measure. 
D)  amount of causation between the two variables.

Question 17

Dr.Rodriguez discovers that the more education people have,the more money they tend to earn.Dr.Rodriguez has discovered a

Accepted Answer

A)  zero correlation. 
B)  positive relationship. 
C)  variable relationship. 
D)  negative relationship. 
A)  zero correlation. 
B)  positive relationship. 
C)  variable relationship. 
D)  negative relationship.

Question 18

Which of the following correlation coefficients indicates the strongest relationship?

Accepted Answer

A)  +.81 
B)  -.65 
C)  +1.05 
D)  +.55 
A)  +.81 
B)  -.65 
C)  +1.05 
D)  +.55

Question 19

A researcher wants to find out if a new math program is superior to the old math program that is used to teach college algebra at a community college.She selects 400 students from the total student body of 4,000 students to participate in this study.The 400 students would be considered the

Accepted Answer

A)  sample. 
B)  experimental group. 
C)  population. 
D)  control group. 
A)  sample. 
B)  experimental group. 
C)  population. 
D)  control group.

Question 20

There are ten students in the pre-kindergarten class.Each student is shown eight colors and asked to name them.The number of colors correctly named by each student was: 8,8,8,8,7,7,6,6,5,4.What would be the mode?

Accepted Answer

A)  4.0 
B)  6.7 
C)  7.0 
D)  8.0 
A)  4.0 
B)  6.7 
C)  7.0 
D)  8.0

Exam 19: Appendix A: Behavioral Statistics

A small,randomly-selected part of a larger population that accurately reflects characteristics of the whole population is a __________sample.

Which of the following would tell us the percentage of variance in one variable that can be accounted for by knowing the other variable?

The relationship between young children's height and weight would represent a

Experiments allow us to

Behavioral variables found in the population often form a normal curve,which is described as which type of distribution?

On a normal curve,99 percent of all the cases would be found between which two SDs?

If the mean on a test is 100 and the standard deviation is 15,a person with a z-score of +1.0 scored which of the following on the test?

After administering a unit test to her psychology students,a college professor calculates the mean and range for this test in order to better understand the performance of her students on the material in this unit.This professor is using __________statistics.

Gabe had a score of 70 in a class with a mean of 80 and a standard deviation of 10.His z-score is

A perfect negative relationship has a coefficient of correlation of

The distribution depicted below is a

The range is a measure of

A single number that describes a "middle score" is a(n)

The scatter diagram below depicts which type of relationship?

Regarding frequency distributions,which of the following statements is FALSE?

If you square the correlational coefficient,you will get a number telling the

Dr.Rodriguez discovers that the more education people have,the more money they tend to earn.Dr.Rodriguez has discovered a

Which of the following correlation coefficients indicates the strongest relationship?

A researcher wants to find out if a new math program is superior to the old math program that is used to teach college algebra at a community college.She selects 400 students from the total student body of 4,000 students to participate in this study.The 400 students would be considered the

There are ten students in the pre-kindergarten class.Each student is shown eight colors and asked to name them.The number of colors correctly named by each student was: 8,8,8,8,7,7,6,6,5,4.What would be the mode?

A: Introduction to Psychology and Research Methods

B: Introduction to Psychology and Research Methods

C: Introduction to Psychology and Research Methods

A: Brain and Behavior

C: Brain and Behavior

A: Human Development

B: Human Development

C: Human Development

D: Human Development

A: Sensation and Perception

B: Sensation and Perception

C: Sensation and Perception

D: Sensation and Perception

A: States of Consciousness

B: States of Consciousness

C: States of Consciousness

D: States of Consciousness

A: Conditioning and Learning

B: Conditioning and Learning

C: Conditioning and Learning

D: Conditioning and Learning

A: Memory

B: Memory

C: Memory

A: Cognition,language,and Creativity

B: Cognition,language,and Creativity

C: Cognition,language,and Creativity

A: Intelligence

B: Intelligence

C: Intelligence

A: Motivation and Emotion

B: Motivation and Emotion

C: Motivation and Emotion

D: Motivation and Emotion

A: Gender and Sexuality

B: Gender and Sexuality

C: Gender and Sexuality

D: Gender and Sexuality Completion

A: Personality

B: Personality

C: Personality

D: Personality

A: Health,stress,and Coping

B: Health,stress,and Coping

C: Health,stress,and Coping

A: Psychological Disorders

B: Psychological Disorders

C: Psychological Disorders

D: Psychological Disorders

A: Therapies

B: Therapies

C: Therapies

D: Therapies

A: Social Thinking and Social Influence

B: Social Thinking and Social Influence

C: Social Thinking and Social Influence

A: Prosocial and Antisocial Behavior

B: Prosocial and Antisocial Behavior

C: Prosocial and Antisocial Behavior