The following is a relative frequency distribution of grades in an introductory statistics course. $\begin{array}{|l|c|} \hline \text { Grade } & \text { Relative Frequency } \\ \hline \text { A } & .22 \\ \hline \text { B } & ? \\ \hline \text { C } & .18 \\ \hline \text { D } & .17 \\ \hline \text { F } & .06 \\ \hline \end{array}$ If this was the distribution of 200 students,find the frequency of failures.

A) 12 B) 6 C) 23 D) 46 E) 3 A) 12 B) 6 C) 23 D) 46 E) 3

Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the distances over 24 miles. $\begin{array}{|l|c|} \hline \text { Distance } & \text { Frequency } \\ \hline 1-8 \text { miles } & 15 \\ \hline 9-16 \text { miles } & 12 \\ \hline 17-24 \text { miles } & 7 \\ \hline 25-32 \text { miles } & 5 \\ \hline 33-40 \text { miles } & 1 \\ \hline \end{array}$

A) .375 B) .150 C) .125 D) .025 E) .325 A) .375 B) .150 C) .125 D) .025 E) .325

Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the shortest distance. $\begin{array}{|l|c|} \hline \text { Distance } & \text { Frequency } \\ \hline 1-8 \text { miles } & 15 \\ \hline 9-16 \text { miles } & 12 \\ \hline 17-24 \text { miles } & 7 \\ \hline 25-32 \text { miles } & 5 \\ \hline 33-40 \text { miles } & 1 \\ \hline \end{array}$

A) .375 B) .150 C) .500 D) .300 E) .333 A) .375 B) .150 C) .500 D) .300 E) .333

The following is a relative frequency distribution of grades in an introductory statistics course. $\begin{array}{|l|c|} \hline \text { Grade } & \text { Relative Frequency } \\ \hline \text { A } & .22 \\ \hline \text { B } & ? \\ \hline \text { C } & .18 \\ \hline \text { D } & .17 \\ \hline \text { F } & .06 \\ \hline \end{array}$ If this was the distribution of 200 students,find the frequency for the highest two grades.

A) 44 B) 118 C) 59 D) 74 E) 35 A) 44 B) 118 C) 59 D) 74 E) 35

A local electronics retailer recently conducted a study on purchasers of large screen televisions.The study recorded the type of television and the credit account balance of the customer at the time of purchase.They obtained the following results. $\begin{array} { | l | c | c | c | c | } \hline \begin{array} { l } \text { Credit } \\ \text { Balance } \end{array} & \text { Standard TV } & \text { LCD } & \text { Plasma } & \text { Projection } \\ \hline \text { Under \$200 } & 10 & 16 & 40 & 5 \\ \hline \$ 200 - \$ 800 & 8 & 12 & 24 & 15 \\ \hline \text { Over \$800 } & 16 & 12 & 16 & 30 \\ \hline \text { Total } & 34 & 40 & 80 & 50 \\ \hline \end{array}$ What percentage of the customers had the highest credit balances and purchased an LCD television?

A) 36.30 B) 5.90 C) 19.60 D) 56.30 E) 16.20 A) 36.30 B) 5.90 C) 19.60 D) 56.30 E) 16.20

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.The following results were obtained. $\begin{array} { | l | c | c | c | } \hline & \text { Female } & \text { Male } & \text { Total } \\ \hline \text { Correctly recalled the company } & 66 & 50 & 116 \\ \hline \text { Incorrectly recalled the company } & 44 & 40 & 84 \\ \hline \text { Total } & 110 & 90 & 200 \\ \hline \end{array}$ What percentage of those surveyed were female and could not recall the company?

A) 40.0 B) 22.0 C) 52.4 D) 66.7 E) 37.9 A) 40.0 B) 22.0 C) 52.4 D) 66.7 E) 37.9

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. $\begin{array} { l l } 76 & 9 \\ 77 & 114 \\ 78 & \\ 79 & 07 \\ 80 & 88 \\ 81 & 2 \\ 82 & 1 \\ 83 & 88 \end{array}$ What would be the class length for creating the frequency histogram?

A) 1.4 B) 0.8 C) 2.7 D) 1.7 E) 2.3 A) 1.4 B) 0.8 C) 2.7 D) 1.7 E) 2.3

A CFO is looking at how much of a company's resources are spent on computing.He samples companies in the pharmaceutical industry and develops the following stem-and-leaf graph. $\begin{array} { l l } 5 & 269 \\ 6 & 255568999 \\ 7 & 11224557789 \\ 8 & 001222458 \\ 9 & 02455679 \\ 10 & 1556 \\ 11 & 137 \\ 12 & \\ 13 & 255 \end{array}$ What is the smallest percentage spent on R&D?

A) 5.9 B) 5.6 C) 5.2 D) 5.02 E) 50.2 A) 5.9 B) 5.6 C) 5.2 D) 5.02 E) 50.2

Exam 2: Descriptive Statistics: Tabular and Graphical Methods

The following is a relative frequency distribution of grades in an introductory statistics course. Grade Relative Frequency A .22 B ? C .18 D .17 F .06 If this was the distribution of 200 students,find the frequency of failures.

(Multiple Choice)

4.9/5

(35)

Question 61

Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the distances over 24 miles. Distance Frequency 1-8 miles 15 9-16 miles 12 17-24 miles 7 25-32 miles 5 33-40 miles 1

(Multiple Choice)

4.8/5

(34)

Question 62

Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the shortest distance. Distance Frequency 1-8 miles 15 9-16 miles 12 17-24 miles 7 25-32 miles 5 33-40 miles 1

(Multiple Choice)

4.9/5

(28)

Question 63

All of the following are used to describe quantitative data except the ___________.

(Multiple Choice)

4.7/5

(31)

Question 64

The following is a relative frequency distribution of grades in an introductory statistics course. Grade Relative Frequency A .22 B ? C .18 D .17 F .06 If this was the distribution of 200 students,find the frequency for the highest two grades.

(Multiple Choice)

4.9/5

(25)

Question 65

A stem-and-leaf display is a graphical portrayal of a data set that shows the data set's overall pattern of variation.

(True/False)

4.7/5

(38)

Question 66

Which one of the following graphical tools is used with quantitative data?

(Multiple Choice)

4.9/5

(27)

Question 67

A scatter plot can be used to identify outliers.

(True/False)

4.8/5

(34)

Question 68

An observation separated from the rest of the data is a(n)___________.

(Multiple Choice)

4.8/5

(34)

Question 69

A very simple graph that can be used to summarize a quantitative data set is called a(n)___________.

(Multiple Choice)

4.9/5

(28)

Question 70

A local electronics retailer recently conducted a study on purchasers of large screen televisions.The study recorded the type of television and the credit account balance of the customer at the time of purchase.They obtained the following results. Credit Balance Standard TV LCD Plasma Projection Under \2 00 10 16 40 5 \ 200-\ 800 8 12 24 15 Over \8 00 16 12 16 30 Total 34 40 80 50 What percentage of the customers had the highest credit balances and purchased an LCD television?

(Multiple Choice)

4.7/5

(39)

Question 71

In a Pareto chart,the bar for the "Other" category should be placed to the far left of the chart.

(True/False)

4.7/5

(42)

Question 72

Recently an advertising company called 200 people and asked them to identify the company that was in an ad running nationwide.The following results were obtained. Female Male Total Correctly recalled the company 66 50 116 Incorrectly recalled the company 44 40 84 Total 110 90 200 What percentage of those surveyed were female and could not recall the company?

(Multiple Choice)

4.9/5

(30)

Question 73

When looking at the shape of the distribution using a stem-and-leaf,a distribution is skewed to the right when the left tail is shorter than the right tail.

(True/False)

4.7/5

(44)

Question 74

Which of the following graphs is for qualitative data?

(Multiple Choice)

5.0/5

(32)

Question 75

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 What would be the class length for creating the frequency histogram?

(Multiple Choice)

4.9/5

(35)

Question 76

An example of manipulating a graphical display to distort reality is ___________.

(Multiple Choice)

4.8/5

(31)

Question 77

The number of weekly sales calls by a sample of 25 pharmaceutical salespersons is below. 24,56,43,35,37,27,29,44,34,28,33,28,46,31,38,41,48,38,27,29,37,33,31,40,50 Construct a histogram.

(Essay)

4.8/5

(32)

Question 78

The number of weekly sales calls by a sample of 25 pharmaceutical salespersons is below. 24,56,43,35,37,27,29,44,34,28,33,28,46,31,38,41,48,38,27,29,37,33,31,40,50 What is the shape of the distribution of the data?

(Multiple Choice)

4.7/5

(33)

Question 79

A CFO is looking at how much of a company's resources are spent on computing.He samples companies in the pharmaceutical industry and develops the following stem-and-leaf graph. 5 269 6 255568999 7 11224557789 8 001222458 9 02455679 10 1556 11 137 12 13 255 What is the smallest percentage spent on R&D?

(Multiple Choice)

4.9/5

(33)

Question 80

The following is a relative frequency distribution of grades in an introductory statistics course. Grade Relative Frequency A .22 B ? C .18 D .17 F .06 If this was the distribution of 200 students,find the frequency of failures.

Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the distances over 24 miles. Distance Frequency 1-8 miles 15 9-16 miles 12 17-24 miles 7 25-32 miles 5 33-40 miles 1

Consider the following data on distances traveled by people to visit the local amusement park and calculate the relative frequency for the shortest distance. Distance Frequency 1-8 miles 15 9-16 miles 12 17-24 miles 7 25-32 miles 5 33-40 miles 1

All of the following are used to describe quantitative data except the ___________.

The following is a relative frequency distribution of grades in an introductory statistics course. Grade Relative Frequency A .22 B ? C .18 D .17 F .06 If this was the distribution of 200 students,find the frequency for the highest two grades.

A stem-and-leaf display is a graphical portrayal of a data set that shows the data set's overall pattern of variation.

Which one of the following graphical tools is used with quantitative data?

A scatter plot can be used to identify outliers.

An observation separated from the rest of the data is a(n)___________.

A very simple graph that can be used to summarize a quantitative data set is called a(n)___________.

In a Pareto chart,the bar for the "Other" category should be placed to the far left of the chart.

When looking at the shape of the distribution using a stem-and-leaf,a distribution is skewed to the right when the left tail is shorter than the right tail.

Which of the following graphs is for qualitative data?

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 What would be the class length for creating the frequency histogram?

An example of manipulating a graphical display to distort reality is ___________.

The number of weekly sales calls by a sample of 25 pharmaceutical salespersons is below. 24,56,43,35,37,27,29,44,34,28,33,28,46,31,38,41,48,38,27,29,37,33,31,40,50 Construct a histogram.

The number of weekly sales calls by a sample of 25 pharmaceutical salespersons is below. 24,56,43,35,37,27,29,44,34,28,33,28,46,31,38,41,48,38,27,29,37,33,31,40,50 What is the shape of the distribution of the 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