The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school: $\begin{array}{c} \begin{array}{lll} \text {Salary }\\ (\$1,000s)\\ \text {28 -under 31}\\ \text {31-under 35}\\ \text {34 -under 37}\\ \text {39-under 40} \end{array} \begin{array}{c} \text { Number of Graduates }\\ \\ -\\ -\\ -\\ -\\ \end{array} \end{array}$ Before data were collected, someone questioned the validity of this arrangement.Which of the following represents a problem with this set of intervals?

A) There are too many intervals. B) The class widths are too small. C) The class widths are too large. D) The second and the third interval overlap. E) There are too few intervals. A) There are too many intervals. B) The class widths are too small. C) The class widths are too large. D) The second and the third interval overlap. E) There are too few intervals.

Scott Brim, Chief Financial Officer of Space Mall, Inc., wants to better understand the busiest business hours during the weekend.There are door sensors that approximate the number of people who enter the mall.The table below presents the average number of people coming in during the weekend, for the last month each hour: \[\begin{array} { r c } \text { Hour } & \text { Number of People } \\ \text { 9-under 10 } & 350 \\ \text { 10-under 11 } & 400 \\ \text { 11-under 12 } & 300 \\ \text { 12-under 1 } & 650 \\ \text { 1-under 2 } & 550 \\ \text { 2-under 3 } & 400 \\ \text { 3-under 4 } & 350 \\ \text { 4-under 5 } & 450 \\ \text { 5-under 6 } & 250 \\ \text { 6-under 7 } & 300 \\ \text { 7-under 8 } & 200 \\ \text { 8-under 9 } & 300 \end{array}\] The relative frequency of the fourth class interval is _________.

A) 0.07 B) 0.08 C) 0.14 D) 0.15 E) 0.38 A) 0.07 B) 0.08 C) 0.14 D) 0.15 E) 0.38

Consider the following frequency distribution: \[\begin{array} { l c } \text { Class Interval } & \text { Frequency } \\ 100 \text {-under } 200 & 25 \\ 200 \text {-under } 300 & 45 \\ 300 \text {-under } 400 & 30 \end{array}\] What is the midpoint of the last class interval?

A) 15 B) 350 C) 300 D) 200 E) 400 A) 15 B) 350 C) 300 D) 200 E) 400

Consider the relative frequency distribution given \[\begin{array} { l c } \text { Class Interval } & \text { Relative Frequency } \\ \text { 20-under } 40 & 0.2 \\ 40 \text {-under } 60 & 0.3 \\ 60 \text {-under } 80 & 0.4 \\ \text { 80-under } 100 & 0.1 \end{array}\] There were 60 numbers in the data set.How many numbers were in the interval 20-under 40?

A) 12 B) 20 C) 40 D) 10 E) 15 A) 12 B) 20 C) 40 D) 10 E) 15

Exam 2: Visualizing Data With Charts and Graphs

The staff of Ms.Tamara Hill, VP of Technical Analysis at Blue Sky Brokerage, prepared a frequency histogram of market capitalization of the 937 corporations listed on the American Stock Exchange in January 2019. Enlarged chart below and same chart in question 65 is also made larger, per suggestion Approximately ________ corporations had capitalization exceeding $200,000,000.

(Multiple Choice)

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Question 101

A shirt production company has tracked their production since the company started in 1999.The graph of their annual production is shown. After 2005, in what year did production recover and surpass the production level of 2005?

(Multiple Choice)

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Question 102

Each day, the manager at Jamie's Auto Care Shop prepares a frequency distribution and a histogram of sales transactions by dollar value of the transactions.Friday's histogram follows. On Friday, the approximate number of sales transactions in the 75-under 100 category was _____________.

(Multiple Choice)

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Question 103

For any given data set, a frequency distribution with a larger number of classes will always be better than the one with a smaller number of classes.

(True/False)

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Question 104

The following class intervals for a frequency distribution were developed to provide information regarding the starting salaries for students graduating from a particular school: Salary ( \1 ,000s) 28 -under 31 31-under 35 34 -under 37 39-under 40 Number of Graduates - - - - Before data were collected, someone questioned the validity of this arrangement.Which of the following represents a problem with this set of intervals?

(Multiple Choice)

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Question 105

Scott Brim, Chief Financial Officer of Space Mall, Inc., wants to better understand the busiest business hours during the weekend.There are door sensors that approximate the number of people who enter the mall.The table below presents the average number of people coming in during the weekend, for the last month each hour: Hour Number of People 9-under 10 350 10-under 11 400 11-under 12 300 12-under 1 650 1-under 2 550 2-under 3 400 3-under 4 350 4-under 5 450 5-under 6 250 6-under 7 300 7-under 8 200 8-under 9 300 The relative frequency of the fourth class interval is _________.

(Multiple Choice)

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Question 106

Consider the following frequency distribution: Class Interval Frequency 100 -under 200 25 200 -under 300 45 300 -under 400 30 What is the midpoint of the last class interval?

(Multiple Choice)

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Question 107

A graphical representation of a frequency distribution is called a pie chart.

(True/False)

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Question 108

The staff of Mr.Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a frequency histogram of waiting time for drive up ATM customers. Approximately ____ drive up ATM customers waited at least 7 minutes.

(Multiple Choice)

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Question 109

Consider the relative frequency distribution given Class Interval Relative Frequency 20-under 40 0.2 40 -under 60 0.3 60 -under 80 0.4 80-under 100 0.1 There were 60 numbers in the data set.How many numbers were in the interval 20-under 40?

(Multiple Choice)

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Question 110

The staff of the accounting and the quality control departments rated their respective supervisor's leadership style as either (1)authoritarian or (2)participatory.Sixty-eight percent of the accounting staff rated their supervisor "authoritarian," and thirty-two percent rated him/her "participatory." Forty percent of the quality control staff rated their supervisor "authoritarian," and sixty percent rated him/her "participatory." The best graphic depiction of these data would be two ___________________.

(Multiple Choice)

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Question 111

A shirt production company has tracked their sales of red and blue shirts over the past few years.The graph of both is shown below. Which of the following is a true statement about the trends in sales?

(Multiple Choice)

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Question 112

Consider a scatterplot showing the relationship between years of formal education and life expectancy.Which of the following statements is false?

(Multiple Choice)

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Question 113

Showing 101 - 113 of 113

A shirt production company has tracked their production since the company started in 1999.The graph of their annual production is shown. After 2005, in what year did production recover and surpass the production level of 2005?

Each day, the manager at Jamie's Auto Care Shop prepares a frequency distribution and a histogram of sales transactions by dollar value of the transactions.Friday's histogram follows. On Friday, the approximate number of sales transactions in the 75-under 100 category was _____________.

For any given data set, a frequency distribution with a larger number of classes will always be better than the one with a smaller number of classes.

Consider the following frequency distribution: Class Interval Frequency 100 -under 200 25 200 -under 300 45 300 -under 400 30 What is the midpoint of the last class interval?

A graphical representation of a frequency distribution is called a pie chart.

The staff of Mr.Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a frequency histogram of waiting time for drive up ATM customers. Approximately ____ drive up ATM customers waited at least 7 minutes.

Consider the relative frequency distribution given Class Interval Relative Frequency 20-under 40 0.2 40 -under 60 0.3 60 -under 80 0.4 80-under 100 0.1 There were 60 numbers in the data set.How many numbers were in the interval 20-under 40?

A shirt production company has tracked their sales of red and blue shirts over the past few years.The graph of both is shown below. Which of the following is a true statement about the trends in sales?

Consider a scatterplot showing the relationship between years of formal education and life expectancy.Which of the following statements is false?

Introduction to Statistics and Business Analytics

Descriptive Statistics

Probability

Discrete Distributions

Continuous Distributions

Sampling and Sampling Distributions

Statistical Inference: Estimation for Single Populations

Statistical Inference: Hypothesis Testing for Single Populations

Statistical Inferences About Two Populations

Analysis of Variance and Design of Experiments

Simple Regression Analysis and Correlation

Multiple Regression Analysis

Building Multiple Regression Models

Time-Series Forecasting and Index Numbers

Analysis of Categorical Data

Nonparametric Statistics

Statistical Quality Control

Decision Analysis

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