Question 1

Using the table below, what grade would a student who ranked in the 50th percentile receive.

Accepted Answer

A)  B 
B)  C 
C)  D 
D)  F 
A)  B 
B)  C 
C)  D 
D)  F B

Question 2

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

Accepted Answer

Outliers

Question 3

A ______________ is the midpoint in a data array.

Accepted Answer

median

Question 4

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

Accepted Answer

A) True 
 B)False

Question 5

A recent survey of a new diet cola reported the following percentages of people who liked the taste. Find the weighted mean of the percentages.

Accepted Answer

A)  41 
B)  38 
C)  36 
D)  40 
A)  41 
B)  38 
C)  36 
D)  40

Question 6

What is the midrange of the following data set?
1, 7, 6, 8, 0, 8, 14, 14, 14

Accepted Answer

A)  7 
B)  8 
C)  1 
D)  14 
A)  7 
B)  8 
C)  1 
D)  14

Question 7

Find the mean of the following data set.
7, 9, 9, 9, 7, 13

Accepted Answer

The answer of Find the mean of the following data...

Question 8

What is the median of the following set of values?
10, 8, 5, 3, 14

Accepted Answer

A)  5 
B)  7 
C)  8 
D)  9 
A)  5 
B)  7 
C)  8 
D)  9

Question 9

The coefficient of variation for a data set is the mean divided by the standard deviation, expressed as a percentage.

Accepted Answer

A) True 
 B)False

Question 10

Identify the five-number summary of the following data set.
7, 11, 21, 28, 32, 33, 37, 43.

Accepted Answer

A)  7, 16, 30, 35, 43 
B)  7, 21, 30, 33, 43 
C)  7, 11, 28, 33, 43 
D)  7, 21, 26.5, 33, 43 
A)  7, 16, 30, 35, 43 
B)  7, 21, 30, 33, 43 
C)  7, 11, 28, 33, 43 
D)  7, 21, 26.5, 33, 43

Question 11

Find the mean, mode, median, and midrange for the following data set.
12, 15, 18, 18, 15, 22, 15, 30, 12

Accepted Answer

mean = 17.

Question 12

If a data set has 16 values and a standard deviation 9.4, then the variance is ________.

Accepted Answer

A)  88.4 
B)  2.3 
C)  22.1 
D)  37.6 
A)  88.4 
B)  2.3 
C)  22.1 
D)  37.6

Question 13

A distribution in which approximately 68% of the data values fall within one standard deviation of the mean behaves according to

Accepted Answer

A)  the empirical rule. 
B)  a symmetrical distribution. 
C)  a boxplot. 
D)  differential statistics. 
A)  the empirical rule. 
B)  a symmetrical distribution. 
C)  a boxplot. 
D)  differential statistics.

Question 14

The average age of Stokes County school board members over the last 40 years has been 55, but members have ranged from 32 to 70. Use the range rule of thumb to estimate the standard deviation of the members' ages.

Accepted Answer

A)  19 
B)  25.5 
C)  9.5 
D)  52.3 
A)  19 
B)  25.5 
C)  9.5 
D)  52.3

Question 15

According to Chebyshev's theorem, the maximum proportion of data values from a data set that are more than 1.5 standard deviations from the mean is _________.

Accepted Answer

A)  0.67 
B)  0.17 
C)  1.33 
D)  0.44 
A)  0.67 
B)  0.17 
C)  1.33 
D)  0.44

Question 16

What is the mean of the following data set?
6, 10, 13, 14, 15

Accepted Answer

A)  9.0 
B)  11.6 
C)  13.0 
D)  16.4 
A)  9.0 
B)  11.6 
C)  13.0 
D)  16.4

Question 17

For a set of data with a mean of 12 and a variance of 25, approximately 68% of the values will fall between 7 to 17.

Accepted Answer

A) True 
 B)False

Question 18

What is the mode of the following data set?
8, 22, 20, 16, 20, 18, 15

Accepted Answer

A)  14 
B)  18 
C)  16 
D)  20 
A)  14 
B)  18 
C)  16 
D)  20

Question 19

Indicate which student has the higher z score.

Accepted Answer

A)  The art major has a higher score than the theater major. 
B)  The theater 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 theater major. 
B)  The theater 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 20

Find the median of the following data set.
2, 9, 6, 5, 2

Accepted Answer

The answer of Find the median of the following data...

Using the table below, what grade would a student who ranked in the 50th percentile receive.

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

A ______________ is the midpoint in a data array.

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

A recent survey of a new diet cola reported the following percentages of people who liked the taste. Find the weighted mean of the percentages.

What is the midrange of the following data set? 1, 7, 6, 8, 0, 8, 14, 14, 14

Find the mean of the following data set. 7, 9, 9, 9, 7, 13

What is the median of the following set of values? 10, 8, 5, 3, 14

The coefficient of variation for a data set is the mean divided by the standard deviation, expressed as a percentage.

Identify the five-number summary of the following data set. 7, 11, 21, 28, 32, 33, 37, 43.

Find the mean, mode, median, and midrange for the following data set. 12, 15, 18, 18, 15, 22, 15, 30, 12

If a data set has 16 values and a standard deviation 9.4, then the variance is ________.

A distribution in which approximately 68% of the data values fall within one standard deviation of the mean behaves according to

The average age of Stokes County school board members over the last 40 years has been 55, but members have ranged from 32 to 70. Use the range rule of thumb to estimate the standard deviation of the members' ages.

According to Chebyshev's theorem, the maximum proportion of data values from a data set that are more than 1.5 standard deviations from the mean is _________.

What is the mean of the following data set? 6, 10, 13, 14, 15

For a set of data with a mean of 12 and a variance of 25, approximately 68% of the values will fall between 7 to 17.

What is the mode of the following data set? 8, 22, 20, 16, 20, 18, 15

Indicate which student has the higher z score.

Find the median of the following data set. 2, 9, 6, 5, 2

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Probability and Counting Rules

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

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

Correlation and Regression

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters

Exam 3: Data Description

Using the table below, what grade would a student who ranked in the 50th percentile receive.

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

A ______________ is the midpoint in a data array.

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

A recent survey of a new diet cola reported the following percentages of people who liked the taste. Find the weighted mean of the percentages.

What is the midrange of the following data set? 1, 7, 6, 8, 0, 8, 14, 14, 14

Find the mean of the following data set. 7, 9, 9, 9, 7, 13

What is the median of the following set of values? 10, 8, 5, 3, 14

The coefficient of variation for a data set is the mean divided by the standard deviation, expressed as a percentage.

Identify the five-number summary of the following data set. 7, 11, 21, 28, 32, 33, 37, 43.

Find the mean, mode, median, and midrange for the following data set. 12, 15, 18, 18, 15, 22, 15, 30, 12

If a data set has 16 values and a standard deviation 9.4, then the variance is ________.

A distribution in which approximately 68% of the data values fall within one standard deviation of the mean behaves according to

The average age of Stokes County school board members over the last 40 years has been 55, but members have ranged from 32 to 70. Use the range rule of thumb to estimate the standard deviation of the members' ages.

According to Chebyshev's theorem, the maximum proportion of data values from a data set that are more than 1.5 standard deviations from the mean is _________.

What is the mean of the following data set? 6, 10, 13, 14, 15

For a set of data with a mean of 12 and a variance of 25, approximately 68% of the values will fall between 7 to 17.

What is the mode of the following data set? 8, 22, 20, 16, 20, 18, 15

Indicate which student has the higher z score.

Find the median of the following data set. 2, 9, 6, 5, 2

The Nature of Probability and Statistics

Frequency Distributions and Graphs

Probability and Counting Rules

Discrete Probability Distributions

The Normal Distribution

Confidence Intervals and Sample Size

Hypothesis Testing

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

Correlation and Regression

Other Chi-Square Tests

Analysis of Variance

Nonparametric Statistics

Sampling and Simulation

Filters