Question 1

Given that the mean of a set of data is 25 and the standard deviation is 3, what would be the coefficient of variation?

Accepted Answer

A)  0.12 
B)  $12 \%$ 
C)  8.33 
D)  $833 \%$ 
A)  0.12 
B)  $12 \%$ 
C)  8.33 
D)  $833 \%$

Question 2

The interquartile range or IQR is found by subtracting the mean from the maximum value of a data
set.

Accepted Answer

A) True 
 B)False

Question 3

The following data set could also be referred to as a data array:
3, 4, 2, 7.

Accepted Answer

A) True 
 B)False

Question 4

Determine the range for this data: 6, 14, 10, 8, 21:

Accepted Answer

A)  6 
B)  10 
C)  15 
D)  21 
A)  6 
B)  10 
C)  15 
D)  21

Question 5

The range of a data set is the distance between the highest value and the lowest value.

Accepted Answer

A) True 
 B)False

Question 6

Chebyshev's theorem can be used to find the minimum percentage of data values that will fall between
any two given values.

Accepted Answer

A) True 
 B)False

Question 7

If the range is divided by 6, an approximate value for the standard deviation is obtained.

Accepted Answer

A) True 
 B)False

Question 8

Given the following boxplot where $m$ is the median value, what statement could be made about the
distribution of the data?

Accepted Answer

A)  The distribution is approximately symmetric.
  
B)  The distribution is positively skewed.
  
C)  The distribution is negatively skewed.
  
D)  No statement can be made about the data because no data values are shown on the plot. 
A)  The distribution is approximately symmetric.
  
B)  The distribution is positively skewed.
  
C)  The distribution is negatively skewed.
  
D)  No statement can be made about the data because no data values are shown on the plot.

Question 9

A ______________ is the midpoint in a data array. 
________________________________________

Accepted Answer

The answer of A ______________ is the midpoint in a...

Question 10

Given the following data set, find the IQR.
7, 5, 4, 1, 2, 4, 5, 10, 11, 14, 11

Accepted Answer

The answer of Given the following data set, find the...

Question 11

Find the $z$ score for each student and indicate which one has the higher relative score. 
$\begin{array}{|l|l|l|l|}
\hline \text { Art Major } & X=46 & \bar{X}=50 & s=5 \
\hline \text { Theatre Major } & X=70 & \bar{X}=75 & s=7 \
\hline
\end{array}$

Accepted Answer

A)  The art major has a higher score than the theatre major. 
B)  The theatre major has a higher score than the art major. 
C)  Both students have the same score. 
D)  Neither student received a positive score; therefore, the higher score cannot be determined. 
A)  The art major has a higher score than the theatre major. 
B)  The theatre major has a higher score than the art major. 
C)  Both students have the same score. 
D)  Neither student received a positive score; therefore, the higher score cannot be determined.

Question 12

Make a boxplot for the following data set.
24, 15, 34, 92, 67, 34, 78, 45, 53, 67, 83, 46

Accepted Answer

The answer of Make a boxplot for the following data...

Question 13

______________ are either extremely high or extremely low data values compared with the rest of the
data. 
________________________________________

Accepted Answer

The answer of ______________ are either extremely high or extremely...

Question 14

According to Chebyshev's theorem, the proportion of values from a data set that is further than 2 standard deviations from the mean is no more than:

Accepted Answer

A)  0.50 
B)  0.13 
C)  1.00 
D)  0.25 
A)  0.50 
B)  0.13 
C)  1.00 
D)  0.25

Question 15

The ________________ is the mode for grouped data. 
________________________________________

Accepted Answer

The answer of The ________________ is the mode for grouped...

Question 16

$$\begin{array}{l}
\begin{array} { | l | l | } 
\hline \text { Class Boundaries } & \text { Frequencies } \
\hline 13.5 - 18.5 & 4 \
\hline 18.5 - 23.5 & 9 \
\hline 23.5 - 28.5 & 12 \
\hline 28.5 - 33.5 & 15 \
\hline 33.5 - 38.5 & 17 \
\hline
\end{array}\
\text { Given the following frequency distribution, find the mean. }
\end{array}$$

Accepted Answer

A)  28.8 
B)  12.6 
C)  26.3 
D)  31.3 
A)  28.8 
B)  12.6 
C)  26.3 
D)  31.3

Question 17

The range rule of thumb is only an approximation and should only be used when the distribution of data
values is unimodal and roughly symmetric.

Accepted Answer

A) True 
 B)False

Question 18

Given the following data set, find the percentile rank for a score of 6.
8, 2, 4, 5, 7, 2, 5, 5, 6

Accepted Answer

The answer of Given the following data set, find the...

Question 19

For the data set 10, -3, 4 8, the range rule of thumb is

Accepted Answer

A)  1.8 
B)  1.5 
C)  3.3 
D)  2.2 
A)  1.8 
B)  1.5 
C)  3.3 
D)  2.2

Question 20

If the mean of a set of data is 26.00, and 33.50 has a z-score of 0.75, then the standard deviation must be:

Accepted Answer

A)  10.00 
B)  100.00 
C)  5.00 
D)  50.00 
A)  10.00 
B)  100.00 
C)  5.00 
D)  50.00

Given that the mean of a set of data is 25 and the standard deviation is 3, what would be the coefficient of variation?

The interquartile range or IQR is found by subtracting the mean from the maximum value of a data set.

The following data set could also be referred to as a data array: 3, 4, 2, 7.

Determine the range for this data: 6, 14, 10, 8, 21:

The range of a data set is the distance between the highest value and the lowest value.

Chebyshev's theorem can be used to find the minimum percentage of data values that will fall between any two given values.

If the range is divided by 6, an approximate value for the standard deviation is obtained.

Given the following boxplot where $m$ is the median value, what statement could be made about the distribution of the data?

A is the midpoint in a data array. __________________________

Given the following data set, find the IQR. 7, 5, 4, 1, 2, 4, 5, 10, 11, 14, 11

Find the $z$ score for each student and indicate which one has the higher relative score. Art Major X=46 =50 s=5 Theatre Major X=70 =75 s=7

Make a boxplot for the following data set. 24, 15, 34, 92, 67, 34, 78, 45, 53, 67, 83, 46

are either extremely high or extremely low data values compared with the rest of the data. __________________________

According to Chebyshev's theorem, the proportion of values from a data set that is further than 2 standard deviations from the mean is no more than:

The is the mode for grouped data. ________________________

Class Boundaries Frequencies 13.5-18.5 4 18.5-23.5 9 23.5-28.5 12 28.5-33.5 15 33.5-38.5 17 Given the following frequency distribution, find the mean.

The range rule of thumb is only an approximation and should only be used when the distribution of data values is unimodal and roughly symmetric.

Given the following data set, find the percentile rank for a score of 6. 8, 2, 4, 5, 7, 2, 5, 5, 6

For the data set 10, -3, 4 8, the range rule of thumb is

If the mean of a set of data is 26.00, and 33.50 has a z-score of 0.75, then the standard deviation must be:

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Proportions, and Two Variances

Correlation and Regression

Chi-Square and Analysis of Variance Anova

Tables

Data Bank

Glossary

Filters

Exam 3: Data Description

Given that the mean of a set of data is 25 and the standard deviation is 3, what would be the coefficient of variation?

The interquartile range or IQR is found by subtracting the mean from the maximum value of a data set.

The following data set could also be referred to as a data array: 3, 4, 2, 7.

Determine the range for this data: 6, 14, 10, 8, 21:

The range of a data set is the distance between the highest value and the lowest value.

Chebyshev's theorem can be used to find the minimum percentage of data values that will fall between any two given values.

If the range is divided by 6, an approximate value for the standard deviation is obtained.

Given the following boxplot where mmm is the median value, what statement could be made about the distribution of the data?

A ______________ is the midpoint in a data array. ________________________________________

Given the following data set, find the IQR. 7, 5, 4, 1, 2, 4, 5, 10, 11, 14, 11

Find the zzz score for each student and indicate which one has the higher relative score. Art Major X=46 =50 s=5 Theatre Major X=70 =75 s=7

Make a boxplot for the following data set. 24, 15, 34, 92, 67, 34, 78, 45, 53, 67, 83, 46

______________ are either extremely high or extremely low data values compared with the rest of the data. ________________________________________

According to Chebyshev's theorem, the proportion of values from a data set that is further than 2 standard deviations from the mean is no more than:

The ________________ is the mode for grouped data. ________________________________________

Class Boundaries Frequencies 13.5-18.5 4 18.5-23.5 9 23.5-28.5 12 28.5-33.5 15 33.5-38.5 17 Given the following frequency distribution, find the mean.

The range rule of thumb is only an approximation and should only be used when the distribution of data values is unimodal and roughly symmetric.

Given the following data set, find the percentile rank for a score of 6. 8, 2, 4, 5, 7, 2, 5, 5, 6

For the data set 10, -3, 4 8, the range rule of thumb is

If the mean of a set of data is 26.00, and 33.50 has a z-score of 0.75, then the standard deviation must be:

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

Testing the Difference Between Two Means, Two Proportions, and Two Variances

Correlation and Regression

Chi-Square and Analysis of Variance Anova

Tables

Data Bank

Glossary

Filters

Given the following boxplot where $m$ is the median value, what statement could be made about the distribution of the data?

A is the midpoint in a data array. __________________________

Find the $z$ score for each student and indicate which one has the higher relative score. Art Major X=46 =50 s=5 Theatre Major X=70 =75 s=7

are either extremely high or extremely low data values compared with the rest of the data. __________________________

The is the mode for grouped data. ________________________