Question 1

Carol is drawing a graph of a frequency distribution in which she places the number of scores falling in each class as points on a line.Carol is graphing a

Accepted Answer

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

Question 2

When measure X gets larger,measure Y also gets larger in a

Accepted Answer

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

Question 3

The variability of a set of scores refers to which aspect of those scores?

Accepted Answer

A)  average 
B)  spread 
C)  uniqueness 
D)  probability

Question 4

Dots connected by straight lines are to a frequency polygon as a bar graph is to a

Accepted Answer

A)  diorama. 
B)  pictograph. 
C)  histogram. 
D)  scatterplot.

Question 5

Regarding correlations,which of the following statements is FALSE?

Accepted Answer

A)  It is impossible for two correlated variables to have a cause-and-effect relationship. 
B)  We cannot conclude, solely on the basis of correlation, that a causal link exists. 
C)  An experiment must be performed to establish a causal relationship. 
D)  Often, two correlated measures are related as a result of the influence of a third variable.

Question 6

A researcher studies the effects of a new therapy on a small group of depressed individuals in the hopes of generalizing these findings for use with all depressed people.This researcher is using __________ statistics.

Accepted Answer

A)  descriptive 
B)  normative 
C)  inferential 
D)  random

Question 7

A correlation describes the

Accepted Answer

A)  probability of a variable occurring. 
B)  commonality of two variables. 
C)  relationship between two variables. 
D)  mean and median of a variable.

Question 8

If the points on a scatter diagram are clustered in a pattern that extends from upper left to the lower right,this would suggest that the two variables depicted are

Accepted Answer

A)  normally distributed. 
B)  not correlated. 
C)  negatively correlated. 
D)  positively correlated.

Question 9

In order to convert a number to a z-score,it is necessary,within a group of scores,to know the mean and the

Accepted Answer

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

Question 10

Students' hat sizes and their college grades would be a

Accepted Answer

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

Question 11

Which of the following correlations is depicted below?

Accepted Answer

A)  +1.00 
B)  -1.00 
C)  0.00 
D)  +.50

Question 12

Melissa is using the three measures of central tendency,which is a type of

Accepted Answer

A)  nominal scale. 
B)  ordinal scale. 
C)  descriptive statistic. 
D)  inferential statistic.

Question 13

The type of graph depicted below is a

Accepted Answer

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

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.

Question 15

Which of the following correlation coefficients indicates the weakest relationship?

Accepted Answer

A)  +.29 
B)  -.65 
C)  -1.03 
D)  +.75

Question 16

Which of the following is made by labeling class intervals on the abscissa,frequencies on the ordinate,and then drawing bars for each class interval with the height of each bar being determined by the number of scores in each class?

Accepted Answer

A)  scatter diagram 
B)  histogram 
C)  frequency polygon 
D)  normal curve

Question 17

If two variables have a correlation of +1.00,then

Accepted Answer

A)  a perfect negative relationship exists between them. 
B)  a perfect positive relationship exists between them. 
C)  a weak relationship exists between them. 
D)  it is not possible to tell the type of relationship that exists between them.

Question 18

The fewer days that students attend class,the lower their grades.This would be a

Accepted Answer

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

Question 19

Matt is using a single score that describes how scattered or "spread out" his distribution of scores is.Matt is using a measure of

Accepted Answer

A)  central tendency. 
B)  the mean. 
C)  variability. 
D)  the median.

Question 20

A bell-shaped distribution,with a large number of scores in the middle,tapering to very few extremely high and low scores is known as a

Accepted Answer

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

Exam 19: Appendix A: Behavioral Statistics

Carol is drawing a graph of a frequency distribution in which she places the number of scores falling in each class as points on a line.Carol is graphing a

When measure X gets larger,measure Y also gets larger in a

The variability of a set of scores refers to which aspect of those scores?

Dots connected by straight lines are to a frequency polygon as a bar graph is to a

Regarding correlations,which of the following statements is FALSE?

A researcher studies the effects of a new therapy on a small group of depressed individuals in the hopes of generalizing these findings for use with all depressed people.This researcher is using __________ statistics.

A correlation describes the

If the points on a scatter diagram are clustered in a pattern that extends from upper left to the lower right,this would suggest that the two variables depicted are

In order to convert a number to a z-score,it is necessary,within a group of scores,to know the mean and the

Students' hat sizes and their college grades would be a

Which of the following correlations is depicted below?

Melissa is using the three measures of central tendency,which is a type of

The type of graph depicted below is a

The scatter diagram below depicts which type of relationship?

Which of the following correlation coefficients indicates the weakest relationship?

Which of the following is made by labeling class intervals on the abscissa,frequencies on the ordinate,and then drawing bars for each class interval with the height of each bar being determined by the number of scores in each class?

If two variables have a correlation of +1.00,then

The fewer days that students attend class,the lower their grades.This would be a

Matt is using a single score that describes how scattered or "spread out" his distribution of scores is.Matt is using a measure of

A bell-shaped distribution,with a large number of scores in the middle,tapering to very few extremely high and low scores is known as a