Question 1

$$\begin{array}{l}
\text { For the data set below, find the } 53 \text { rd percentile. }\
\begin{array} { r r r r r } 
\hline 64 & 95 & 74 & 70 & 32 \
58 & 24 & 46 & 25 & 17 \
59 & 51 & 7 & 60 & 36 \
67 & 67 & 54 & 33 & 60 \
\hline
\end{array}
\end{array}$$

Accepted Answer

A)  53 
B)  56 
C)  59 
D)  58 
A)  53 
B)  56 
C)  59 
D)  58

Question 2

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

Accepted Answer

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

Question 3

The following data represent the total price, in dollars, of 20 randomly-selected gasoline purchases at a certain convenience store.

$\begin{array}{llllllllll}
\hline 65.11 & 58.35 & 53.36 & 70.22 & 57.31 & 44.17 & 41.53 & 71.76 & 49.11 & 58.8 \
78.90 & 62.13 & 46.36 & 75.27 & 47.79 & 54.39 & 10.11 & 47.10 & 48.23 & 68.6 \
\hline
\end{array}$

Which value in this data set is most accurately described as an extreme value?

Accepted Answer

A)  $10.11 
B)  $68.69 
C)  $78.90 
D)  $68.79 
A)  $10.11 
B)  $68.69 
C)  $78.90 
D)  $68.79

Question 4

A population has a mean $\mu = 21$ and standard deviation $\sigma = 11$. Find the $z$-score for a population value of 40 .

Accepted Answer

A)  0.6 
B)  3.6 
C)  19 
D)  1.7 
A)  0.6 
B)  3.6 
C)  19 
D)  1.7

Question 5

The table below lists the populations, in thousands, of several rural western counties. Wh: mean population?
$\begin{array}{cc}
\hline \text { County } & \text { Population (thousands) } \
\hline \text { Aldridge } & 17 \
\text { Cleveland } & 20 \
\text { McCarthy } & 12 \
\text { Pope } & 22 \
\text { Sorrell } & 19 \
\text { Wilson } & 18
\end{array}$
 is the

Accepted Answer

A)  18.0 thousand 
B)  10 thousand 
C)  17 thousand 
D)  18.5 thousand 
A)  18.0 thousand 
B)  10 thousand 
C)  17 thousand 
D)  18.5 thousand

Question 6

Find the median for the following data set: 21 12 31 27 15

Accepted Answer

A)  21 
B)  19 
C)  21.2 
D)  7.1 
A)  21 
B)  19 
C)  21.2 
D)  7.1

Question 7

What is the median of the following set of values? 2, 16, 14, 10, 14, 9, 10, 14

Accepted Answer

A)  14 
B)  12 
C)  8 
D)  10 
A)  14 
B)  12 
C)  8 
D)  10

Question 8

A data set has a mean of 70 and a standard deviation of 10. Which of the following might possibly be true?

Accepted Answer

A)  At least 15% of the data values are less than 40 or greater than 100. 
B)  More than 90% of the data values are between 40 and 100. 
C)  No more than 50% of the data values are between 50 and 90. 
D)  No less than 30% of the data values are less than 50 or greater than 90. 
A)  At least 15% of the data values are less than 40 or greater than 100. 
B)  More than 90% of the data values are between 40 and 100. 
C)  No more than 50% of the data values are between 50 and 90. 
D)  No less than 30% of the data values are less than 50 or greater than 90.

Question 9

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

Question 10

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

Accepted Answer

A) True 
 B)False

Question 11

divide a distribution into four groups, and divide a
distribution into ten groups.

Accepted Answer

The answer of divide a distribution into four groups, and...

Question 12

For the data shown in the histogram, which of the following choices best describes the rel between the median and the mean?

Accepted Answer

A) median $>$ mean B) median $<$ mean C) median $\approx$ mean elationship A) median $>$ mean B) median $<$ mean C) median $\approx$ mean elationship

Question 13

Find the range of the set of values 4, 13, 3, 10, and 5.

Accepted Answer

A)  8 
B)  13 
C)  10 
D)  3 
A)  8 
B)  13 
C)  10 
D)  3

Question 14

For the data set 1, 8, 7, 2, 9, 15, 18, the properly rounded mean is 9.

Accepted Answer

A) True 
 B)False

Question 15

The following table presents the heights (in inches) of a sample of college basketball play
$\begin{array}{cc}
\hline \text { Height (in.) } & \text { Frequency } \
\hline 68-71 & 3 \
72-75 & 5 \
76-79 & 2 \
80-83 & 2 \
84-87 & 2 \
\hline
\end{array}$
Considering the data to be a population, approximate the variance of the heights. .

Accepted Answer

A)  5.6 
B)  31.0 
C)  28.8 
D)  5.4 
A)  5.6 
B)  31.0 
C)  28.8 
D)  5.4

Question 16

$$\begin{array}{l}
\text { Approximate the sample variance given the following frequency distribution. }\
\begin{array} { c c } 
\hline \text { Class } & \text { Frequency } \
\hline 0 - 19 & 14 \
20 - 39 & 15 \
40 - 59 & 9 \
60 - 79 & 9 \
80 - 99 & 9 \
\hline
\end{array}
\end{array}$$

Accepted Answer

A)  28.5 
B)  795.9 
C)  810.4 
D)  28.2 
A)  28.5 
B)  795.9 
C)  810.4 
D)  28.2

Question 17

Using the table below, what grade would a student who ranked in the 50th percentile receive.
$\begin{array}{ccc}
\hline \text { Grade } & \text { Class Boundaries } & \text { Frequency } \
\hline \text { A } & 89.5-99.5 & 4 \
\text { B } & 79.5-89.5 & 7 \
\text { C } & 69.5-79.5 & 11 \
\text { D } & 59.5-69.5 & 3 \
\text { F } & 49.5-59.5 & 3
\end{array}$

Accepted Answer

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

Question 18

For a set of data with a mean of 6 and a variance of 9, approximately 68% of the values
will fall between 3 to 9.

Accepted Answer

A) True 
 B)False

Question 19

The following table presents the heights (in inches) of a sample of college basketball play
$\begin{array}{cc}
\hline \text { Height (in.) } & \text { Frequency } \
\hline 68-71 & 11 \
72-75 & 56 \
76-79 & 54 \
80-83 & 40 \
84-87 & 13 \
\hline
\end{array}$
Considering the data to be a population, approximate the standard deviation of the heights .

Accepted Answer

A)  77.7 
B)  4.2 
C)  17.6 
D)  4 
A)  77.7 
B)  4.2 
C)  17.6 
D)  4

Question 20

The following data represent the ice cream flavor choices of 20 diners at a college cafeter
$\begin{array}{lllll}
\hline \text { Chocolate } & \text { Vanilla } & \text { Chocolate } & \text { Rocky Road } & \text { Vanilla } \
\text { Rocky Road } & \text { Vanilla } & \text { Vanilla } & \text { Rocky Road } & \text { Vanilla } \
\text { Rocky Road } & \text { Chocolate } & \text { Choc. Chip } & \text { Moose Tracks } & \text { Chocolate } \
\text { Choc. Chip } & \text { Rocky Road } & \text { Vanilla } & \text { Vanilla } & \text { Choc. Chip } \
\hline
\end{array}$

Which flavor ice cream is the mode?

Accepted Answer

A)  Moose Tracks 
B)  Chocolate Chip 
C)  Vanilla 
D)  Rocky Road 
A)  Moose Tracks 
B)  Chocolate Chip 
C)  Vanilla 
D)  Rocky Road

For the data set below, find the 53 rd percentile. 64 95 74 70 32 58 24 46 25 17 59 51 7 60 36 67 67 54 33 60

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

A population has a mean $\mu = 21$ and standard deviation $\sigma = 11$ . Find the $z$ -score for a population value of 40 .

The table below lists the populations, in thousands, of several rural western counties. Wh: mean population? County Population (thousands) Aldridge 17 Cleveland 20 McCarthy 12 Pope 22 Sorrell 19 Wilson 18 is the

Find the median for the following data set: 21 12 31 27 15

What is the median of the following set of values? 2, 16, 14, 10, 14, 9, 10, 14

A data set has a mean of 70 and a standard deviation of 10. Which of the following might possibly be true?

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?

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

divide a distribution into four groups, and divide a distribution into ten groups.

For the data shown in the histogram, which of the following choices best describes the rel between the median and the mean?

Find the range of the set of values 4, 13, 3, 10, and 5.

For the data set 1, 8, 7, 2, 9, 15, 18, the properly rounded mean is 9.

The following table presents the heights (in inches) of a sample of college basketball play Height (in.) Frequency 68-71 3 72-75 5 76-79 2 80-83 2 84-87 2 Considering the data to be a population, approximate the variance of the heights. .

Approximate the sample variance given the following frequency distribution. Class Frequency 0-19 14 20-39 15 40-59 9 60-79 9 80-99 9

Using the table below, what grade would a student who ranked in the 50th percentile receive. Grade Class Boundaries Frequency A 89.5-99.5 4 B 79.5-89.5 7 C 69.5-79.5 11 D 59.5-69.5 3 F 49.5-59.5 3

For a set of data with a mean of 6 and a variance of 9, approximately 68% of the values will fall between 3 to 9.

The following table presents the heights (in inches) of a sample of college basketball play Height (in.) Frequency 68-71 11 72-75 56 76-79 54 80-83 40 84-87 13 Considering the data to be a population, approximate the standard deviation of the heights .

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

For the data set below, find the 53 rd percentile. 64 95 74 70 32 58 24 46 25 17 59 51 7 60 36 67 67 54 33 60

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

A population has a mean μ=21\mu = 21μ=21 and standard deviation σ=11\sigma = 11σ=11 . Find the zzz -score for a population value of 40 .

The table below lists the populations, in thousands, of several rural western counties. Wh: mean population? County Population (thousands) Aldridge 17 Cleveland 20 McCarthy 12 Pope 22 Sorrell 19 Wilson 18 is the

Find the median for the following data set: 21 12 31 27 15

What is the median of the following set of values? 2, 16, 14, 10, 14, 9, 10, 14

A data set has a mean of 70 and a standard deviation of 10. Which of the following might possibly be true?

A baseball player has a batting average of 0.3250.3250.325 each week of the season, with a standard deviation of 0.0650.0650.065 . What is the zzz score when he bats 0.4100.4100.410 one week?

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

divide a distribution into four groups, and divide a distribution into ten groups.

For the data shown in the histogram, which of the following choices best describes the rel between the median and the mean?

Find the range of the set of values 4, 13, 3, 10, and 5.

For the data set 1, 8, 7, 2, 9, 15, 18, the properly rounded mean is 9.

The following table presents the heights (in inches) of a sample of college basketball play Height (in.) Frequency 68-71 3 72-75 5 76-79 2 80-83 2 84-87 2 Considering the data to be a population, approximate the variance of the heights. .

Approximate the sample variance given the following frequency distribution. Class Frequency 0-19 14 20-39 15 40-59 9 60-79 9 80-99 9

Using the table below, what grade would a student who ranked in the 50th percentile receive. Grade Class Boundaries Frequency A 89.5-99.5 4 B 79.5-89.5 7 C 69.5-79.5 11 D 59.5-69.5 3 F 49.5-59.5 3

For a set of data with a mean of 6 and a variance of 9, approximately 68% of the values will fall between 3 to 9.

The following table presents the heights (in inches) of a sample of college basketball play Height (in.) Frequency 68-71 11 72-75 56 76-79 54 80-83 40 84-87 13 Considering the data to be a population, approximate the standard deviation of the heights .

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

A population has a mean $\mu = 21$ and standard deviation $\sigma = 11$ . Find the $z$ -score for a population value of 40 .

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?