A company collected the ages from a random sample of its middle managers,with the resulting frequency distribution shown below. \(\begin{array} { lc } \text { Class Interval } & \text { Frequency } \\ 20 \text { to } < 25 & 8 \\ 25 \text { to } < 30 & 6 \\ 30 \text { to } < 35 & 5 \\ 35 \text { to } < 40 & 12 \\ 40 \text { to } < 45 & 15 \\ 45 \text { to } < 50 & 7 \end{array}\) What is the relative frequency for the largest interval?

A) .132 B) .226 C) .231 D) .283 E) .288 A) .132 B) .226 C) .231 D) .283 E) .288

A company collected the ages from a random sample of its middle managers,with the resulting frequency distribution shown below. \(\begin{array} { lc } \text { Class Interval } & \text { Frequency } \\ 20 \text { to } < 25 & 8 \\ 25 \text { to } < 30 & 6 \\ 30 \text { to } < 35 & 5 \\ 35 \text { to } < 40 & 12 \\ 40 \text { to } < 45 & 15 \\ 45 \text { to } < 50 & 7 \end{array}\) What is the midpoint of the third class interval?

A) 22.5 B) 27.5 C) 32.5 D) 37.5 E) 42.5 A) 22.5 B) 27.5 C) 32.5 D) 37.5 E) 42.5

The following is a partial relative frequency distribution of grades in an introductory statistics course. \(\begin{array}{|l|c|} \hline \text { Grade } & \text { Relative Frequency } \\ \hline \text { A } & .22 \\ \hline \text { B } & ? \\ \hline \text { C } & .18 \\ \hline \text { D } & .17 \\ \hline \text { F } & .06 \\ \hline \end{array}\) Find the relative frequency for the B grade.

A) .78 B) .27 C) .65 D) .37 E) .47 A) .78 B) .27 C) .65 D) .37 E) .47

Exam 2: Descriptive Statistics: Tabular and Graphical Methods

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results.

(Essay)

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Question 81

A company collected the ages from a random sample of its middle managers,with the resulting frequency distribution shown below. Class Interval Frequency 20 to <25 8 25 to <30 6 30 to <35 5 35 to <40 12 40 to <45 15 45 to <50 7 What is the relative frequency for the largest interval?

(Multiple Choice)

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Question 82

A histogram that tails out toward larger values is ___________.

(Multiple Choice)

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Question 83

A relative frequency curve having a long tail to the right is said to be ___________.

(Multiple Choice)

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Question 84

If there are 30 values in a data set,how many classes should be created for a frequency histogram?

(Multiple Choice)

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Question 85

The general term for a graphical display of categorical data made up of vertical or horizontal bars is called a(n)___________.

(Multiple Choice)

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Question 86

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 How many classes should be used in constructing a histogram?

(Multiple Choice)

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Question 87

A _ displays the frequency of each group with qualitative data and a _ displays the frequency of each group with quantitative data.

(Multiple Choice)

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Question 88

A graphical portrayal of a quantitative data set that divides the data into classes and gives the frequency of each class is a(n)___________.

(Multiple Choice)

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Question 89

A company collected the ages from a random sample of its middle managers,with the resulting frequency distribution shown below. Class Interval Frequency 20 to <25 8 25 to <30 6 30 to <35 5 35 to <40 12 40 to <45 15 45 to <50 7 What is the midpoint of the third class interval?

(Multiple Choice)

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Question 90

The following is a relative frequency distribution of grades in an introductory statistics course.

(Essay)

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Question 91

The US local airport keeps track of the percentage of flights arriving within 15 minutes of their scheduled arrivals.The stem-and-leaf plot of the data for one year is below. 76 9 77 114 78 79 07 80 88 81 2 82 1 83 88 How many flights were used in this plot?

(Multiple Choice)

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Question 92

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results.

(Essay)

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Question 93

The following is a relative frequency distribution of grades in an introductory statistics course.

(Essay)

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Question 94

________ can be used to study the relationship between two variables.

(Multiple Choice)

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Question 95

Each stem of a stem-and-leaf display should be a single digit.

(True/False)

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Question 96

It is possible to create different interpretations of the same graphical display by simply using different captions.

(True/False)

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Question 97

The following is a partial relative frequency distribution of grades in an introductory statistics course. Grade Relative Frequency A .22 B ? C .18 D .17 F .06 Find the relative frequency for the B grade.

(Multiple Choice)

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Question 98

A histogram that tails out toward smaller values is ___________.

(Multiple Choice)

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Question 99

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 Complete this frequency table for these data.

(Essay)

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Question 100

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results.

A company collected the ages from a random sample of its middle managers,with the resulting frequency distribution shown below. Class Interval Frequency 20 to <25 8 25 to <30 6 30 to <35 5 35 to <40 12 40 to <45 15 45 to <50 7 What is the relative frequency for the largest interval?

A histogram that tails out toward larger values is ___________.

A relative frequency curve having a long tail to the right is said to be ___________.

If there are 30 values in a data set,how many classes should be created for a frequency histogram?

The general term for a graphical display of categorical data made up of vertical or horizontal bars is called a(n)___________.

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 How many classes should be used in constructing a histogram?

A _ displays the frequency of each group with qualitative data and a _ displays the frequency of each group with quantitative data.

A graphical portrayal of a quantitative data set that divides the data into classes and gives the frequency of each class is a(n)___________.

A company collected the ages from a random sample of its middle managers,with the resulting frequency distribution shown below. Class Interval Frequency 20 to <25 8 25 to <30 6 30 to <35 5 35 to <40 12 40 to <45 15 45 to <50 7 What is the midpoint of the third class interval?

The following is a relative frequency distribution of grades in an introductory statistics course.

The US local airport keeps track of the percentage of flights arriving within 15 minutes of their scheduled arrivals.The stem-and-leaf plot of the data for one year is below. 76 9 77 114 78 79 07 80 88 81 2 82 1 83 88 How many flights were used in this plot?

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results.

The following is a relative frequency distribution of grades in an introductory statistics course.

________ can be used to study the relationship between two variables.

Each stem of a stem-and-leaf display should be a single digit.

It is possible to create different interpretations of the same graphical display by simply using different captions.

The following is a partial relative frequency distribution of grades in an introductory statistics course. Grade Relative Frequency A .22 B ? C .18 D .17 F .06 Find the relative frequency for the B grade.

A histogram that tails out toward smaller values is ___________.

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 Complete this frequency table for these data.

An Introduction to Business Statistics

Descriptive Statistics: Numerical Methods

Probability

Discrete Random Variables

Continuous Random Variables

Sampling and Sampling Distributions

Confidence Intervals

Hypothesis Testing

Comparing Two Means and Two Proportions

Filters

Exam 2: Descriptive Statistics: Tabular and Graphical Methods

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results.

A company collected the ages from a random sample of its middle managers,with the resulting frequency distribution shown below. Class Interval Frequency 20 to <25 8 25 to <30 6 30 to <35 5 35 to <40 12 40 to <45 15 45 to <50 7 What is the relative frequency for the largest interval?

A histogram that tails out toward larger values is ___________.

A relative frequency curve having a long tail to the right is said to be ___________.

If there are 30 values in a data set,how many classes should be created for a frequency histogram?

The general term for a graphical display of categorical data made up of vertical or horizontal bars is called a(n)___________.

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 How many classes should be used in constructing a histogram?

A _____________ displays the frequency of each group with qualitative data and a _____________ displays the frequency of each group with quantitative data.

A graphical portrayal of a quantitative data set that divides the data into classes and gives the frequency of each class is a(n)___________.

A company collected the ages from a random sample of its middle managers,with the resulting frequency distribution shown below. Class Interval Frequency 20 to <25 8 25 to <30 6 30 to <35 5 35 to <40 12 40 to <45 15 45 to <50 7 What is the midpoint of the third class interval?

The following is a relative frequency distribution of grades in an introductory statistics course.

The US local airport keeps track of the percentage of flights arriving within 15 minutes of their scheduled arrivals.The stem-and-leaf plot of the data for one year is below. 76 9 77 114 78 79 07 80 88 81 2 82 1 83 88 How many flights were used in this plot?

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.They obtained the following results.

The following is a relative frequency distribution of grades in an introductory statistics course.

________ can be used to study the relationship between two variables.

Each stem of a stem-and-leaf display should be a single digit.

It is possible to create different interpretations of the same graphical display by simply using different captions.

The following is a partial relative frequency distribution of grades in an introductory statistics course. Grade Relative Frequency A .22 B ? C .18 D .17 F .06 Find the relative frequency for the B grade.

A histogram that tails out toward smaller values is ___________.

The number of items rejected daily by a manufacturer because of defects for the last 30 days are: 20,21,8,17,22,19,18,19,14,17,11,6,21,25,4,19,9,12,16,16,10,28,24,6,21,20,25,5,17,8 Complete this frequency table for these data.

An Introduction to Business Statistics

Descriptive Statistics: Numerical Methods

Probability

Discrete Random Variables

Continuous Random Variables

Sampling and Sampling Distributions

Confidence Intervals

Hypothesis Testing

Comparing Two Means and Two Proportions

Filters

A _ displays the frequency of each group with qualitative data and a _ displays the frequency of each group with quantitative data.