Question 1

The ________________ is the mode for grouped data.

Accepted Answer

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

Question 2

The costs per load (in cents) of 26 dish-washing detergents tested by a consumer organization are shown here. Find the standard deviation of the sample.

Accepted Answer

A)  10.2 
B)  10.0 
C)  10.4 
D)  5.9 
A)  10.2 
B)  10.0 
C)  10.4 
D)  5.9

Question 3

Which of the following is true?

Accepted Answer

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

Question 4

A weighted mean is used when the values of the data set are not all equally represented.

Accepted Answer

A) True 
 B)False

Question 5

The average resident of Metro City produces 640 pounds of solid waste each year, and the standard deviation is approximately 90 pounds. Use Chebyshev's theorem to find the weight range that contains at least 75% of all residents' annual garbage weights.

Accepted Answer

A)  Between 550 and 730 pounds 
B)  Between 280 and 1000 pounds 
C)  Between 370 and 910 pounds 
D)  Between 460 and 820 pounds 
A)  Between 550 and 730 pounds 
B)  Between 280 and 1000 pounds 
C)  Between 370 and 910 pounds 
D)  Between 460 and 820 pounds

Question 6

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)  The data are nominal and consequently can not be identified as symmetric or skewed. 
A)  The distribution is approximately symmetric. 
B)  The distribution is positively skewed. 
C)  The distribution is negatively skewed. 
D)  The data are nominal and consequently can not be identified as symmetric or skewed.

Question 7

Find the mode for the following data?
5, 4, 3, 4, 5, 6, 5, 5, 3, 4

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  6 
A)  3 
B)  4 
C)  5 
D)  6

Question 8

The data shown represents the high scores for members of a bowling league over a particular season. Find the approximate percentile rank of a score of 266 by constructing a percentile graph.

Accepted Answer

A)  77 
B)  72 
C)  67 
D)  62 
A)  77 
B)  72 
C)  67 
D)  62

Question 9

If a distribution is negatively skewed as shown in the figure below, the mean will fall to the right of the median and the mode will fall to the left of the median.

Accepted Answer

A) True 
 B)False

Question 10

Find the mean of the following data set?
11, 6, 9, 4, 15

Accepted Answer

A)  6.0 
B)  8.0 
C)  9.0 
D)  10.0 
A)  6.0 
B)  8.0 
C)  9.0 
D)  10.0

Question 11

Find the median of the following data set.
8, 10, 10, 10, 8, 14

Accepted Answer

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

Question 12

A baseball player has a batting average of 0.325 each week of the season, with a standard deviation of 0.065. What is the z score when he bats 0.410 one week?

Accepted Answer

A)  1.308 
B)  0.410 
C)  0.325 
D)  1.275 
A)  1.308 
B)  0.410 
C)  0.325 
D)  1.275

Question 13

What is the median of the following set of values?
7, 21, 19, 15, 19, 14, 15, 19

Accepted Answer

A)  13 
B)  17 
C)  15 
D)  19 
A)  13 
B)  17 
C)  15 
D)  19

Question 14

Determine the range for the following data set.
4, 15, 8, 6, 20

Accepted Answer

A)  4 
B)  8 
C)  16 
D)  20 
A)  4 
B)  8 
C)  16 
D)  20

Question 15

The grades for the trigonometry exam are listed below. Find the range.
85, 76, 93, 82, 84, 90, 75

Accepted Answer

A)  76 
B)  9 
C)  11 
D)  18 
A)  76 
B)  9 
C)  11 
D)  18

Question 16

The variance of a data set is the square root of the standard deviation.

Accepted Answer

A) True 
 B)False

Question 17

A student received the following grades last semester. Find the student's semester grade point average.

Accepted Answer

A)  3.20 
B)  3.80 
C)  3.57 
D)  3.32 
A)  3.20 
B)  3.80 
C)  3.57 
D)  3.32

Question 18

Find the median for the following data.
6, 7, 4, 5, 3, 7, 4

Accepted Answer

A)  3 
B)  4 
C)  5 
D)  7 
A)  3 
B)  4 
C)  5 
D)  7

Question 19

If a set of data has mean 48 and variance 9, then it's coefficient of variation is ________.

Accepted Answer

The answer of If a set of data has mean...

Question 20

A five-number summary of a data set consists of the minimum,    , the median,    , and the maximum.

Accepted Answer

A) True 
 B)False

The ________________ is the mode for grouped data.

The costs per load (in cents) of 26 dish-washing detergents tested by a consumer organization are shown here. Find the standard deviation of the sample.

Which of the following is true?

A weighted mean is used when the values of the data set are not all equally represented.

The average resident of Metro City produces 640 pounds of solid waste each year, and the standard deviation is approximately 90 pounds. Use Chebyshev's theorem to find the weight range that contains at least 75% of all residents' annual garbage weights.

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

Find the mode for the following data? 5, 4, 3, 4, 5, 6, 5, 5, 3, 4

The data shown represents the high scores for members of a bowling league over a particular season. Find the approximate percentile rank of a score of 266 by constructing a percentile graph.

If a distribution is negatively skewed as shown in the figure below, the mean will fall to the right of the median and the mode will fall to the left of the median.

Find the mean of the following data set? 11, 6, 9, 4, 15

Find the median of the following data set. 8, 10, 10, 10, 8, 14

A baseball player has a batting average of 0.325 each week of the season, with a standard deviation of 0.065. What is the z score when he bats 0.410 one week?

What is the median of the following set of values? 7, 21, 19, 15, 19, 14, 15, 19

Determine the range for the following data set. 4, 15, 8, 6, 20

The grades for the trigonometry exam are listed below. Find the range. 85, 76, 93, 82, 84, 90, 75

The variance of a data set is the square root of the standard deviation.

A student received the following grades last semester. Find the student's semester grade point average.

Find the median for the following data. 6, 7, 4, 5, 3, 7, 4

If a set of data has mean 48 and variance 9, then it's coefficient of variation is ________.

A five-number summary of a data set consists of the minimum, , the median, , and the maximum.

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

The ________________ is the mode for grouped data.

The costs per load (in cents) of 26 dish-washing detergents tested by a consumer organization are shown here. Find the standard deviation of the sample.

Which of the following is true?

A weighted mean is used when the values of the data set are not all equally represented.

The average resident of Metro City produces 640 pounds of solid waste each year, and the standard deviation is approximately 90 pounds. Use Chebyshev's theorem to find the weight range that contains at least 75% of all residents' annual garbage weights.

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

Find the mode for the following data? 5, 4, 3, 4, 5, 6, 5, 5, 3, 4

The data shown represents the high scores for members of a bowling league over a particular season. Find the approximate percentile rank of a score of 266 by constructing a percentile graph.

If a distribution is negatively skewed as shown in the figure below, the mean will fall to the right of the median and the mode will fall to the left of the median.

Find the mean of the following data set? 11, 6, 9, 4, 15

Find the median of the following data set. 8, 10, 10, 10, 8, 14

A baseball player has a batting average of 0.325 each week of the season, with a standard deviation of 0.065. What is the z score when he bats 0.410 one week?

What is the median of the following set of values? 7, 21, 19, 15, 19, 14, 15, 19

Determine the range for the following data set. 4, 15, 8, 6, 20

The grades for the trigonometry exam are listed below. Find the range. 85, 76, 93, 82, 84, 90, 75

The variance of a data set is the square root of the standard deviation.

A student received the following grades last semester. Find the student's semester grade point average.

Find the median for the following data. 6, 7, 4, 5, 3, 7, 4

If a set of data has mean 48 and variance 9, then it's coefficient of variation is ________.

A five-number summary of a data set consists of the minimum, , the median, , and the maximum.

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