Question 1

The median is always exactly half-way numerically between the highest and lowest scores.

Accepted Answer

A) True 
 B)False  False

Question 2

When a distribution shows a large majority of very low scores and a few very high scores, the distribution is said to be

Accepted Answer

A)  skewed to the right 
B)  skewed to the left 
C)  skewed to the middle 
D)  bimodal 
A)  skewed to the right 
B)  skewed to the left 
C)  skewed to the middle 
D)  bimodal A

Question 3

The point above which half the scores fall and below which half the scores fall, defines the

Accepted Answer

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

Question 4

The mean is not overly affected by extreme scores, unless

Accepted Answer

A)  the extreme scores are all in one direction 
B)  the extreme scores are in both directions 
C)  the number of extreme scores is fewer than 5 
D)  all of these 
A)  the extreme scores are all in one direction 
B)  the extreme scores are in both directions 
C)  the number of extreme scores is fewer than 5 
D)  all of these

Question 5

With a skewed left distribution, the median is always to the right of the mean.

Accepted Answer

A) True 
 B)False

Question 6

In a histogram, the mode is always located

Accepted Answer

A)  under the shortest bar 
B)  under the tallest bar 
C)  under the last bar to the right 
D)  under the last bar to the left 
A)  under the shortest bar 
B)  under the tallest bar 
C)  under the last bar to the right 
D)  under the last bar to the left

Question 7

In a certain community, the median per-family annual income is $80,000.  The 
Mean per-family income is $100,000, whereas the mode is $71,000.
-The annual income which is surpassed by 90% of the families is

Accepted Answer

A)  $100,000 
B)  $71,000 
C)  $80,000 
D)  cannot tell from these data 
A)  $100,000 
B)  $71,000 
C)  $80,000 
D)  cannot tell from these data

Question 8

For the following set of scores, calculate the mean, median and mode: 8, 8, 6, 7, 5, 9.

Accepted Answer

M = 7.17,

Question 9

For the following set of scores, calculate the mean, median and mode: 3, 4, 7, 7, 5, 9.

Accepted Answer

M = 5.83,

Question 10

When the mean lies to the right of the median, the distribution is probably

Accepted Answer

A)  bimodal 
B)  multimodal 
C)  skewed left 
D)  skewed right 
A)  bimodal 
B)  multimodal 
C)  skewed left 
D)  skewed right

Question 11

In a certain community, the median per-family annual income is $80,000.  The 
Mean per-family income is $100,000, whereas the mode is $71,000.
-the annual income achieved by most of the families is

Accepted Answer

A)  $71,000 
B)  $80,000 
C)  $100,000 
D)  half way between the mean and the mode 
A)  $71,000 
B)  $80,000 
C)  $100,000 
D)  half way between the mean and the mode

Question 12

The ordinate is identical to the

Accepted Answer

A)  X axis 
B)  Y axis 
C)  mean 
D)  none of these 
A)  X axis 
B)  Y axis 
C)  mean 
D)  none of these

Question 13

In a certain community, the median per-family annual income is $80,000.  The 
Mean per-family income is $100,000, whereas the mode is $71,000.
-the distribution of income scores is

Accepted Answer

A)  skewed right 
B)  skewed left 
C)  skewed to the middle 
D)  not skewed 
A)  skewed right 
B)  skewed left 
C)  skewed to the middle 
D)  not skewed

Question 14

Thirty-four members of a certain sorority were selected, and asked to indicate how many hours each had spent reading (for pleasure, not school work) during the previous week. The data are as follows: 50, 4, 10, 5, 5, 6, 7, 3, 5, 4, 4, 5, 6, 6, 7, 5, 8, 1, 8, 7, 5, 6, 10, 6, 8, 7, 7, 6, 5, 5, 4, 3, 4, 5.
-Find the mean.

Accepted Answer

The answer of Thirty-four members of a certain sorority were...

Question 15

When single points are used to designate the frequency of each score, the points being connected by a series of straight lines, this is called a

Accepted Answer

A)  frequency polygon 
B)  frequency rectangle 
C)  scatter plot 
D)  histogram 
A)  frequency polygon 
B)  frequency rectangle 
C)  scatter plot 
D)  histogram

Question 16

In a certain community, the median per-family annual income is $80,000.  The 
Mean per-family income is $100,000, whereas the mode is $71,000.
-The annual income which is surpassed by 50% of the families is

Accepted Answer

A)  $80,000 
B)  $71,000 
C)  $100,000 
D)  cannot tell from these data 
A)  $80,000 
B)  $71,000 
C)  $100,000 
D)  cannot tell from these data

Question 17

The abscissa is

Accepted Answer

A)  the horizontal axis 
B)  the vertical axis 
C)  the connected points on a polygon 
D)  a measure of central tendency 
A)  the horizontal axis 
B)  the vertical axis 
C)  the connected points on a polygon 
D)  a measure of central tendency

Question 18

When graphing data, it is traditional to make the length of the ordinate equal to

Accepted Answer

A)  the length of the abscissa 
B)  twice the length of the abscissa 
C)  three-quarters of the length of the abscissa 
D)  one-half of the length of the abscissa 
A)  the length of the abscissa 
B)  twice the length of the abscissa 
C)  three-quarters of the length of the abscissa 
D)  one-half of the length of the abscissa

Question 19

With a frequency polygon, scores are always presented on

Accepted Answer

A)  the X axis 
B)  the Y axis 
C)  the Z axis 
D)  the frequency polygon may never be used to represent scores 
A)  the X axis 
B)  the Y axis 
C)  the Z axis 
D)  the frequency polygon may never be used to represent scores

Question 20

When a distribution is skewed, the researcher who is interested in central tendency should use the

Accepted Answer

A)  mean 
B)  median 
C)  mode 
D)  all of these are appropriate 
A)  mean 
B)  median 
C)  mode 
D)  all of these are appropriate

The median is always exactly half-way numerically between the highest and lowest scores.

When a distribution shows a large majority of very low scores and a few very high scores, the distribution is said to be

The point above which half the scores fall and below which half the scores fall, defines the

The mean is not overly affected by extreme scores, unless

With a skewed left distribution, the median is always to the right of the mean.

In a histogram, the mode is always located

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -The annual income which is surpassed by 90% of the families is

For the following set of scores, calculate the mean, median and mode: 8, 8, 6, 7, 5, 9.

For the following set of scores, calculate the mean, median and mode: 3, 4, 7, 7, 5, 9.

When the mean lies to the right of the median, the distribution is probably

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -the annual income achieved by most of the families is

The ordinate is identical to the

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -the distribution of income scores is

When single points are used to designate the frequency of each score, the points being connected by a series of straight lines, this is called a

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -The annual income which is surpassed by 50% of the families is

The abscissa is

When graphing data, it is traditional to make the length of the ordinate equal to

With a frequency polygon, scores are always presented on

When a distribution is skewed, the researcher who is interested in central tendency should use the

Introduction to Statistics

Measures of Variability

The Normal Curve and Z Score

Z Scores, T Scores and Other Normal Curve Transformations

Probability

Statistics and Parameters

Parameter Estimates

The Fundamentals of Research Methodology

The Hypothesis of Difference

The Hypothesis of Association: Correlation

Analysis of Variance

Nominal Categorical Data and the Chi Square

Regression Analysis

Repeated-Measures and Matched-Subjects Designs Interval Data

Non-Parametrics Revisited: the Ordinal Case

Tests and Measurements

Filters

Exam 2: Percentages, Graphs and Measures of Central Tendency

The median is always exactly half-way numerically between the highest and lowest scores.

When a distribution shows a large majority of very low scores and a few very high scores, the distribution is said to be

The point above which half the scores fall and below which half the scores fall, defines the

The mean is not overly affected by extreme scores, unless

With a skewed left distribution, the median is always to the right of the mean.

In a histogram, the mode is always located

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -The annual income which is surpassed by 90% of the families is

For the following set of scores, calculate the mean, median and mode: 8, 8, 6, 7, 5, 9.

For the following set of scores, calculate the mean, median and mode: 3, 4, 7, 7, 5, 9.

When the mean lies to the right of the median, the distribution is probably

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -the annual income achieved by most of the families is

The ordinate is identical to the

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -the distribution of income scores is

When single points are used to designate the frequency of each score, the points being connected by a series of straight lines, this is called a

In a certain community, the median per-family annual income is $80,000. The Mean per-family income is $100,000, whereas the mode is $71,000. -The annual income which is surpassed by 50% of the families is

The abscissa is

When graphing data, it is traditional to make the length of the ordinate equal to

With a frequency polygon, scores are always presented on

When a distribution is skewed, the researcher who is interested in central tendency should use the

Introduction to Statistics

Measures of Variability

The Normal Curve and Z Score

Z Scores, T Scores and Other Normal Curve Transformations

Probability

Statistics and Parameters

Parameter Estimates

The Fundamentals of Research Methodology

The Hypothesis of Difference

The Hypothesis of Association: Correlation

Analysis of Variance

Nominal Categorical Data and the Chi Square

Regression Analysis

Repeated-Measures and Matched-Subjects Designs Interval Data

Non-Parametrics Revisited: the Ordinal Case

Tests and Measurements

Filters