Question 1

Find the midrange for the given sample data.
-$$\begin{array} { l l l l l l l l } 
49 & 52 & 52 & 52 & 74 & 67 & 55 & 55
\end{array}$$

Accepted Answer

A)  53.5 
B)  61.5 
C)  12.5 
D)  25 
A)  53.5 
B)  61.5 
C)  12.5 
D)  25

Question 2

Find the median for the given sample data.
-The weights (in ounces) of 21 cookies are shown. Find the median weight. $$\begin{array} { l l l l l l l } 
0.89 & 1.39 & 0.89 & 1.62 & 0.88 & 0.88 & 1.08 \
1.39 & 1.53 & 0.99 & 0.89 & 1.37 & 1.40 & 0.71 \
0.47 & 1.37 & 0.88 & 1.40 & 1.72 & 0.88 & 0.56
\end{array}$$

Accepted Answer

A)  0.85 oz 
B)  0.71 oz 
C)  0.99 oz 
D)  1.39 oz 
A)  0.85 oz 
B)  0.71 oz 
C)  0.99 oz 
D)  1.39 oz

Question 3

The heights of the adults in one town have a mean of 66.8 inches and a standard deviation of 3.4 inches. What can you conclude from Chebyshev's theorem about the percentage of adults in the town whose heights are between 60 and 73.6 inches?

Accepted Answer

A)  The percentage is at least 95% 
B)  The percentage is at most 75% 
C)  The percentage is at least 75% 
D)  The percentage is at most 95% 
A)  The percentage is at least 95% 
B)  The percentage is at most 75% 
C)  The percentage is at least 75% 
D)  The percentage is at most 95%

Question 4

Find the variance for the given data. Round your answer to one more decimal place than the original data.
-$$\begin{array} { l l l l l } 
17.5 & 13.5 & 16.9 & 14.5 & 16.1
\end{array}$$

Accepted Answer

A)  2.78 
B)  2.68 
C)  54.13 
D)  2.22 
A)  2.78 
B)  2.68 
C)  54.13 
D)  2.22

Question 5

Construct a boxplot for the given data. Include values of the 5-number summary in all boxplots.
-The ages of the 35 members of a track and field team are listed below. Construct a boxplot for the data set.

$\begin{array} { l l l l l l l } 15 & 16 & 18 & 18 & 18 & 19 & 20 \end{array}$
$\begin{array} { l l l l l l l } 20 & 20 & 21 & 21 & 22 & 22 & 23 \end{array}$
$\begin{array} { l l l l l l l } 23 & 24 & 24 & 24 & 25 & 25 & 26 \end{array}$
$\begin{array} { l l l l l l l } 27 & 27 & 28 & 29 & 29 & 30 & 31 \end{array}$
$\begin{array} { l l l l l l } 31 & 33 & 34 & 35 & 39 & 42 \end{array} 48$

A)

B)

C)

D)

Accepted Answer

The answer of Construct a boxplot for the given data....

Question 6

Determine which score corresponds to the higher relative position.
-Which is better: a score of 82 on a test with a mean of 70 and a standard deviation of 8, or a score of 82 on a test with a mean of 75 and a standard deviation of 4?

Accepted Answer

A)  The first 82 
B)  The second 82 
C)  Both scores have the same relative position. 
A)  The first 82 
B)  The second 82 
C)  Both scores have the same relative position.

Question 7

Construct a boxplot for the given data. Include values of the 5-number summary in all boxplots.
-The weights (in ounces) of 27 tomatoes are shown below. Construct a boxplot for the data set.

$ 
\begin{array}{lllllllll}2.0 & 2.1 & 2.2 & 2.2 & 2.4 & 2.4 & 2.5 & 2.5 & 2.5\end{array} $
$ \begin{array}{llllllllll}2.6 & 2.6 & 2.7 & 2.7 & 2.7 & 2.7 & 2.8 & 2.8 & 2.8\end{array} $
$ \begin{array}{llllllllll}2.9 & 2.9 & 3.0 & 3.0 & 3.0 & 3.1 & 3.1 & 3.2 & 3.4\end{array} $

A)

B)

C)

D)

Accepted Answer

The answer of Construct a boxplot for the given data....

Question 8

Responses to a survey question about eye color are coded as 1 (for brown), 2 (for blue), 3 (for green), 4 (for hazel), and 5 (for any other color). Does it make sense to find the mean, median, or mode of the coded eye colors?

Accepted Answer

It does not make sense to find the mean

Question 9

Boxplots are graphs that are useful for revealing central tendency, the spread of the data, the distribution of the data and the presence of outliers. Draw an example of a box plot and comment on each of these characteristics as shown by your boxplot.

Accepted Answer

Sure, I can provide an example of a box

Question 10

Listed below are the amounts of time (in months) that the employees of an electronics company have been working at the company. Find the midrange. $$\begin{array} { l l l l l l l l l l l l l l } 
15 & 21 & 27 & 34 & 49 & 55 & 61 & 66 & 75 & 75 & 85 & 93 & 132 & 150
\end{array}$$

Accepted Answer

A)  67.5 months 
B)  63.5 months 
C)  67.0 months 
D)  82.5 months 
A)  67.5 months 
B)  63.5 months 
C)  67.0 months 
D)  82.5 months

Question 11

The mean of a set of data is 374.92 and its standard deviation is 105.19. Find the z score for a value of 327.83.

Accepted Answer

A)  -0.49 
B)  -0.45 
C)  -0.15 
D)  -0.40 
A)  -0.49 
B)  -0.45 
C)  -0.15 
D)  -0.40

Question 12

A student earned grades of C, A, B, and A. Those courses had these corresponding numbers of credit hours: $4,6,1$, and 6 . The grading system assigns quality points to letter grades as follows: $\mathrm { A } = 4 , \mathrm {~B} = 3 , \mathrm { C } = 2 , \mathrm { D } = 1$, and $\mathrm { F } = 0$. Compute the grade point average (GPA) and round the result to two decimal places.

Accepted Answer

A)  3.47 
B)  3.55 
C)  9.75 
D)  2.25 
A)  3.47 
B)  3.55 
C)  9.75 
D)  2.25

Question 13

A student earned grades of B, B, A, C, and D. Those courses had these corresponding numbers of credit hours: 4, 5, 2, 5, 4. The grading system assigns quality points to letter grades as follows:
A = 4, B = 3, C = 2, D = 1, and F = 0. Compute the grade point average (GPA) and round the result to two decimal places.

Accepted Answer

A)  1.45 
B)  2.45 
C)  3.77 
D)  9.80 
A)  1.45 
B)  2.45 
C)  3.77 
D)  9.80

Question 14

Find the midrange for the given sample data.
-Bill kept track of the number of hours he spent exercising each week. The results for 15 weeks are shown below. Find the midrange.
 $$\begin{array} { l l l l l } 
7.4 & 6.7 & 7.4 & 7.4 & 7.6 \
8.0 & 6.6 & 8.0 & 8.4 & 7.4 \
8.8 & 6.7 & 8.0 & 9.0 & 7.6
\end{array}$$

Accepted Answer

A)  2.4 hr 
B)  7.80 hr 
C)  7.70 hr 
D)  7.6 hr 
A)  2.4 hr 
B)  7.80 hr 
C)  7.70 hr 
D)  7.6 hr

Question 15

Find the median for the given sample data.
-The ages (in years) of the eight passengers on a bus are listed below. $$\begin{array} { l l l l l l l l } 
6 & 1 & 26 & 15 & 23 & 40 & 32 & 32
\end{array}$$ Find the median age.

Accepted Answer

A)  24.5 yr 
B)  26 yr 
C)  21.5 yr 
D)  23 yr 
A)  24.5 yr 
B)  26 yr 
C)  21.5 yr 
D)  23 yr

Question 16

Find the number of standard deviations from the mean. Round your answer to two decimal places.
-Mario's weekly poker winnings have a mean of $323 and a standard deviation of $50. Last week he won $177. How many standard deviations from the mean is that?

Accepted Answer

A)  1.46 standard deviations above the mean 
B)  2.92 standard deviations above the mean 
C)  1.46 standard deviations below the mean 
D)  2.92 standard deviations below the mean 
A)  1.46 standard deviations above the mean 
B)  2.92 standard deviations above the mean 
C)  1.46 standard deviations below the mean 
D)  2.92 standard deviations below the mean

Question 17

Find the range for the given sample data.
-Fred, a local mechanic, recorded the price of an oil and filter change at twelve competing service stations. The prices (in dollars) are shown below. $$\begin{array} { l l l l } 
32.99 & 24.95 & 26.95 & 28.95 \
18.95 & 28.99 & 30.95 & 22.95 \
24.95 & 26.95 & 29.95 & 28.95
\end{array}$$

Accepted Answer

A)  $12.00 
B)  $14.04 
C)  $10.05 
D)  $32.99 
A)  $12.00 
B)  $14.04 
C)  $10.05 
D)  $32.99

Question 18

Suppose that all the values in a data set are converted to z-scores. Which of the statements below is true?
A: The mean of the z-scores will be zero, and the standard deviation of the z-scores will be the same as the standard deviation of the original data values.
B: The mean and standard deviation of the z-scores will be the same as the mean and standard deviation of the original data values.
C: The mean of the z-scores will be 0, and the standard deviation of the z-scores will be 1.
D: The mean and the standard deviation of the z-scores will both be zero.

Accepted Answer

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

Question 19

Determine which score corresponds to the higher relative position.
-Which score has a higher relative position, a score of $70.2$ on a test for which $\bar { x } = 60$ and s $= 6$, or a score of 276 on a test for which $\bar { x } = 240$ and s $= 24$ ?
A) A score of $70.2$
B) Both scores have the same relative position.
C) A score of 276

Accepted Answer

The answer of Determine which score corresponds to the higher...

Question 20

Find the number of standard deviations from the mean. Round your answer to two decimal places.
-The annual snowfall in a town has a mean of 39 inches and a standard deviation of 10 inches. Last year there were 64 inches of snow. How many standard deviations from the mean is that?

Accepted Answer

A)  0.45 standard deviations above the mean 
B)  0.45 standard deviations below the mean 
C)  2.50 standard deviations above the mean 
D)  2.50 standard deviations below the mean 
A)  0.45 standard deviations above the mean 
B)  0.45 standard deviations below the mean 
C)  2.50 standard deviations above the mean 
D)  2.50 standard deviations below the mean

Find the midrange for the given sample data. - 49 52 52 52 74 67 55 55

Find the median for the given sample data. -The weights (in ounces) of 21 cookies are shown. Find the median weight. 0.89 1.39 0.89 1.62 0.88 0.88 1.08 1.39 1.53 0.99 0.89 1.37 1.40 0.71 0.47 1.37 0.88 1.40 1.72 0.88 0.56

The heights of the adults in one town have a mean of 66.8 inches and a standard deviation of 3.4 inches. What can you conclude from Chebyshev's theorem about the percentage of adults in the town whose heights are between 60 and 73.6 inches?

Find the variance for the given data. Round your answer to one more decimal place than the original data. - 17.5 13.5 16.9 14.5 16.1

Determine which score corresponds to the higher relative position. -Which is better: a score of 82 on a test with a mean of 70 and a standard deviation of 8, or a score of 82 on a test with a mean of 75 and a standard deviation of 4?

Responses to a survey question about eye color are coded as 1 (for brown), 2 (for blue), 3 (for green), 4 (for hazel), and 5 (for any other color). Does it make sense to find the mean, median, or mode of the coded eye colors?

Boxplots are graphs that are useful for revealing central tendency, the spread of the data, the distribution of the data and the presence of outliers. Draw an example of a box plot and comment on each of these characteristics as shown by your boxplot.

Listed below are the amounts of time (in months) that the employees of an electronics company have been working at the company. Find the midrange. 15 21 27 34 49 55 61 66 75 75 85 93 132 150

The mean of a set of data is 374.92 and its standard deviation is 105.19. Find the z score for a value of 327.83.

Find the midrange for the given sample data. -Bill kept track of the number of hours he spent exercising each week. The results for 15 weeks are shown below. Find the midrange. 7.4 6.7 7.4 7.4 7.6 8.0 6.6 8.0 8.4 7.4 8.8 6.7 8.0 9.0 7.6

Find the median for the given sample data. -The ages (in years) of the eight passengers on a bus are listed below. 6 1 26 15 23 40 32 32 Find the median age.

Find the number of standard deviations from the mean. Round your answer to two decimal places. -Mario's weekly poker winnings have a mean of $323 and a standard deviation of $50. Last week he won $177. How many standard deviations from the mean is that?

Find the range for the given sample data. -Fred, a local mechanic, recorded the price of an oil and filter change at twelve competing service stations. The prices (in dollars) are shown below. 32.99 24.95 26.95 28.95 18.95 28.99 30.95 22.95 24.95 26.95 29.95 28.95

Find the number of standard deviations from the mean. Round your answer to two decimal places. -The annual snowfall in a town has a mean of 39 inches and a standard deviation of 10 inches. Last year there were 64 inches of snow. How many standard deviations from the mean is that?

Introduction to Statistics

Summarizing and Graphing Data

Probability

Discrete Probability Distributions

Normal Probability Distributions

Estimates and Sample Size

Hypothesis Testing

Inferences From Two Samples

Correlation and Regression

Chi-Square and Analysis of Variance

Filters

Exam 3: Statistics for Describing, Exploring, and Comparing Data

Find the midrange for the given sample data. - 49 52 52 52 74 67 55 55

Find the median for the given sample data. -The weights (in ounces) of 21 cookies are shown. Find the median weight. 0.89 1.39 0.89 1.62 0.88 0.88 1.08 1.39 1.53 0.99 0.89 1.37 1.40 0.71 0.47 1.37 0.88 1.40 1.72 0.88 0.56

The heights of the adults in one town have a mean of 66.8 inches and a standard deviation of 3.4 inches. What can you conclude from Chebyshev's theorem about the percentage of adults in the town whose heights are between 60 and 73.6 inches?

Find the variance for the given data. Round your answer to one more decimal place than the original data. - 17.5 13.5 16.9 14.5 16.1

Determine which score corresponds to the higher relative position. -Which is better: a score of 82 on a test with a mean of 70 and a standard deviation of 8, or a score of 82 on a test with a mean of 75 and a standard deviation of 4?

Responses to a survey question about eye color are coded as 1 (for brown), 2 (for blue), 3 (for green), 4 (for hazel), and 5 (for any other color). Does it make sense to find the mean, median, or mode of the coded eye colors?

Boxplots are graphs that are useful for revealing central tendency, the spread of the data, the distribution of the data and the presence of outliers. Draw an example of a box plot and comment on each of these characteristics as shown by your boxplot.

Listed below are the amounts of time (in months) that the employees of an electronics company have been working at the company. Find the midrange. 15 21 27 34 49 55 61 66 75 75 85 93 132 150

The mean of a set of data is 374.92 and its standard deviation is 105.19. Find the z score for a value of 327.83.

Find the midrange for the given sample data. -Bill kept track of the number of hours he spent exercising each week. The results for 15 weeks are shown below. Find the midrange. 7.4 6.7 7.4 7.4 7.6 8.0 6.6 8.0 8.4 7.4 8.8 6.7 8.0 9.0 7.6

Find the median for the given sample data. -The ages (in years) of the eight passengers on a bus are listed below. 6 1 26 15 23 40 32 32 Find the median age.

Find the number of standard deviations from the mean. Round your answer to two decimal places. -Mario's weekly poker winnings have a mean of $323 and a standard deviation of $50. Last week he won $177. How many standard deviations from the mean is that?

Find the range for the given sample data. -Fred, a local mechanic, recorded the price of an oil and filter change at twelve competing service stations. The prices (in dollars) are shown below. 32.99 24.95 26.95 28.95 18.95 28.99 30.95 22.95 24.95 26.95 29.95 28.95

Find the number of standard deviations from the mean. Round your answer to two decimal places. -The annual snowfall in a town has a mean of 39 inches and a standard deviation of 10 inches. Last year there were 64 inches of snow. How many standard deviations from the mean is that?

Introduction to Statistics

Summarizing and Graphing Data

Probability

Discrete Probability Distributions

Normal Probability Distributions

Estimates and Sample Size

Hypothesis Testing

Inferences From Two Samples

Correlation and Regression

Chi-Square and Analysis of Variance

Filters