Question 1

A scatter plot in which all the points fall in a straight diagonal line would be characteristic of two sets of variables which

Accepted Answer

A)  are perfectly correlated. 
B)  have a correlation coefficient of 0.0. 
C)  show equal amounts of variability. 
D)  are characterized by none of these. 
A)  are perfectly correlated. 
B)  have a correlation coefficient of 0.0. 
C)  show equal amounts of variability. 
D)  are characterized by none of these.

Question 2

The relationship between anxiety level and classroom test scores would probably

Accepted Answer

A)  produce a negative correlation coefficient. 
B)  produce a positive correlation coefficient. 
C)  be normally distributed. 
D)  show equal amounts of variability. 
A)  produce a negative correlation coefficient. 
B)  produce a positive correlation coefficient. 
C)  be normally distributed. 
D)  show equal amounts of variability.

Question 3

An advantage of using the mode is that it

Accepted Answer

A)  is sensitive to very high or very low scores in a distribution. 
B)  gives the score actually obtained by the greatest number of people. 
C)  is very reliable when there is a small group of scores. 
D)  is the most valid inferential statistic that one can use. 
A)  is sensitive to very high or very low scores in a distribution. 
B)  gives the score actually obtained by the greatest number of people. 
C)  is very reliable when there is a small group of scores. 
D)  is the most valid inferential statistic that one can use.

Question 4

Measures of central tendency include the mean,median,and

Accepted Answer

A)  range. 
B)  module. 
C)  mode. 
D)  standard deviation. 
A)  range. 
B)  module. 
C)  mode. 
D)  standard deviation.

Question 5

Which of the following is made by breaking down the entire range of possible scores into classes of equal size and then recording the number of scores falling into each class?

Accepted Answer

A)  scatter diagram 
B)  variability plot 
C)  correlational matrix 
D)  frequency distribution 
A)  scatter diagram 
B)  variability plot 
C)  correlational matrix 
D)  frequency distribution

Question 6

In order to clearly visualize the correlation,Dr.Amott should construct a

Accepted Answer

A)  histogram. 
B)  frequency polygon. 
C)  frequency distribution. 
D)  scatter diagram. 
A)  histogram. 
B)  frequency polygon. 
C)  frequency distribution. 
D)  scatter diagram.

Question 7

When using correlation,we CANNOT

Accepted Answer

A)  determine the direction of the relationship. 
B)  conclude that a cause-and-effect relationship exists. 
C)  use it to make a prediction. 
D)  determine the strength of the relationship. 
A)  determine the direction of the relationship. 
B)  conclude that a cause-and-effect relationship exists. 
C)  use it to make a prediction. 
D)  determine the strength of the relationship.

Question 8

What percent of all cases are found between an SD of +1 and an SD of -1 on a normal curve?

Accepted Answer

A)  50 
B)  68 
C)  95 
D)  99 
A)  50 
B)  68 
C)  95 
D)  99

Question 9

Descriptive statistics are helpful in doing all of the following EXCEPT

Accepted Answer

A)  making numerical information more meaningful. 
B)  communicating numerical data to other people. 
C)  drawing conclusions from small samples. 
D)  summarizing large amounts of data. 
A)  making numerical information more meaningful. 
B)  communicating numerical data to other people. 
C)  drawing conclusions from small samples. 
D)  summarizing large amounts of data.

Question 10

On a normal curve,68 percent of all the cases would be found between which two standard deviations (SDs)?

Accepted Answer

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

Question 11

The degree of relationship between two measures is depicted by a

Accepted Answer

A)  coefficient of correlation. 
B)  rational coefficient. 
C)  standard deviation. 
D)  coefficient of variation. 
A)  coefficient of correlation. 
B)  rational coefficient. 
C)  standard deviation. 
D)  coefficient of variation.

Question 12

The absence of a mathematical relationship between two measures is referred to as a

Accepted Answer

A)  zero correlation. 
B)  null hypothesis. 
C)  variable relationship. 
D)  negative correlation. 
A)  zero correlation. 
B)  null hypothesis. 
C)  variable relationship. 
D)  negative correlation.

Question 13

Inferential statistics are used for

Accepted Answer

A)  generalization from small samples. 
B)  drawing conclusions. 
C)  decision making based on limited data. 
D)  all of these. 
A)  generalization from small samples. 
B)  drawing conclusions. 
C)  decision making based on limited data. 
D)  all of these.

Question 14

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 mean?

Accepted Answer

A)  4.0 
B)  5.7 
C)  6.7 
D)  8.0 
A)  4.0 
B)  5.7 
C)  6.7 
D)  8.0

Question 15

Which of the following measures offset proportions of a normal curve that are above and below the mean?

Accepted Answer

A)  standard deviation 
B)  median 
C)  mode 
D)  coefficient of correlation 
A)  standard deviation 
B)  median 
C)  mode 
D)  coefficient of correlation

Question 16

If the correlation between the IQs of identical twins is .86,then,in any group of identical twins,what percent of the variation in the "Y" twins' IQs is accounted for by knowing
The IQs of their identical siblings (the "X's")?

Accepted Answer

A)  22 
B)  43 
C)  74 
D)  86 
A)  22 
B)  43 
C)  74 
D)  86

Question 17

Which of the following is the largest number that a correlation coefficient can be?

Accepted Answer

A)  1. 
B)  .001 
C)  100 
D)  10. 
A)  1. 
B)  .001 
C)  100 
D)  10.

Question 18

Which of the following measures of central tendency is sensitive to extremely high or low scores in a distribution?

Accepted Answer

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

Question 19

What percent of all cases are found between a standard deviation (SD)of +2 and an SD of -2 on a normal curve?

Accepted Answer

A)  50 
B)  68 
C)  95 
D)  99 
A)  50 
B)  68 
C)  95 
D)  99

Question 20

The type of graph depicted below is a

Accepted Answer

A)  frequency polygon. 
B)  scatter diagram. 
C)  correlation matrix. 
D)  histogram. 
A)  frequency polygon. 
B)  scatter diagram. 
C)  correlation matrix. 
D)  histogram.

Exam 19: Appendix A: Behavioral Statistics

A scatter plot in which all the points fall in a straight diagonal line would be characteristic of two sets of variables which

The relationship between anxiety level and classroom test scores would probably

An advantage of using the mode is that it

Measures of central tendency include the mean,median,and

Which of the following is made by breaking down the entire range of possible scores into classes of equal size and then recording the number of scores falling into each class?

In order to clearly visualize the correlation,Dr.Amott should construct a

When using correlation,we CANNOT

What percent of all cases are found between an SD of +1 and an SD of -1 on a normal curve?

Descriptive statistics are helpful in doing all of the following EXCEPT

On a normal curve,68 percent of all the cases would be found between which two standard deviations (SDs)?

The degree of relationship between two measures is depicted by a

The absence of a mathematical relationship between two measures is referred to as a

Inferential statistics are used for

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 mean?

Which of the following measures offset proportions of a normal curve that are above and below the mean?

If the correlation between the IQs of identical twins is .86,then,in any group of identical twins,what percent of the variation in the "Y" twins' IQs is accounted for by knowing The IQs of their identical siblings (the "X's")?

Which of the following is the largest number that a correlation coefficient can be?

Which of the following measures of central tendency is sensitive to extremely high or low scores in a distribution?

What percent of all cases are found between a standard deviation (SD)of +2 and an SD of -2 on a normal curve?

The type of graph depicted below is a

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