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

A) 90 B) 80 C) 0.9 D) 54 E) 100 A) 90 B) 80 C) 0.9 D) 54 E) 100

Consider the following frequency distribution: \[\begin{array} { l c } \text { Class Interval } & \text { Frequency } \\ 10 \text {-under } 20 & 15 \\ 20 \text {-under } 30 & 25 \\ 30 \text {-under } 40 & 10 \end{array}\] What is the cumulative frequency of the second class interval?

A) 25 B) 40 C) 15 D) 50 A) 25 B) 40 C) 15 D) 50

Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities in the payroll system and orders an inspection of "each and every payroll voucher issued since January 1, 2000." Each payroll voucher was inspected and the following frequency distribution was compiled. $\begin{array}{c} \begin{array}{c} \text { Errors per Voucher}\\ \text { 0 -under 2}\\ \text { 2-under 4}\\ \text { 4-under 6}\\ \text { 6-under 8}\\ \text { 8-under 10} \end{array} \begin{array}{c} \text {Number of Vouchers}\\ 500 \\ 400 \\ 300 \\ 200 \\ 100 \end{array} \end{array}$ The midpoint of the first class interval is _________.

A) 500 B) 2 C) 1.5 D) 1 E) 250 A) 500 B) 2 C) 1.5 D) 1 E) 250

Consider the following stem and leaf plot: \[\begin{array} { c l } \text { Stem } & \text { Leaf } \\ 1 & 0,2,5,7 \\ 2 & 2,3,4,8 \\ 3 & 0,4,6,6,9 \\ 4 & 5,8,8,9 \\ 5 & 2,7,8 \end{array}\] Suppose that a frequency distribution was developed from this plot, and there were 5 classes (10-under 20, 20-under 30, etc.).What was the highest number in the data set?

A) 50 B) 58 C) 59 D) 78 E) 98 A) 50 B) 58 C) 59 D) 78 E) 98

Exam 2: Visualizing Data With Charts and Graphs

Consider the relative frequency distribution given below: 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 of the number were less than 80?

(Multiple Choice)

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Question 61

Consider the following stem and leaf plot: Stem Leaf 1 0,2,5,7 2 2,3,4,8 3 0,4,6,6,9 4 5,8,8,9 5 2,7,8 Suppose that a frequency distribution was developed from this plot, and there were 5 classes (10-under 20, 20-under 30, etc.).What would be the relative frequency of the class 20-under 30?

(Multiple Choice)

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Question 62

The following graphic of residential housing data (selling price and size in square feet)indicates _____________.

(Multiple Choice)

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Question 63

Abel Alonzo, Director of Human Resources, is exploring employee absenteeism at Harrison Haulers, Inc.during the last operating year.A review of all personnel records indicated that absences ranged from zero to twenty-nine days per employee.The following class intervals were proposed for a frequency distribution of absences. Absences (Days) 0 -under 10 10-under 20 20-under 30 Number of Employees - - - Which of the following might represent a problem with this set of intervals?

(Multiple Choice)

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Question 64

Your company is doing market research to assess the feasibility of a new product.The market research team gathers pricing information of the 60 existing products in the market that would compete with your company's product.The most expensive brand is priced at $22.95, and the least expensive one at $20.59.If the relative frequency of the first class is 0.05 and the cumulative frequency for the second class is 10, then the relative frequency for the second class is

(Multiple Choice)

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Question 65

One rule that must always be followed in constructing frequency distributions is that adjacent classes must overlap.

(True/False)

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Question 66

To compare two series of data during the same time period, the graph should show the first and then show the second after that, all in one line.

(True/False)

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Question 67

Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and an ogive of sales transactions by dollar value of the transactions.Saturday's cumulative frequency ogive follows. The percentage of sales transactions on Saturday that were at least $100 each was _____________.

(Multiple Choice)

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Question 68

A scatter plot shows how the numbers in a data set are scattered around their average.

(True/False)

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Question 69

Consider the following stem and leaf plot: Stem Leaf 1 0,2,5,7 2 2,3,4,4 3 0,4,6,6,9 4 5,8,8,9 5 2,7,8 Suppose that a frequency distribution was developed from this plot, and there were 5 classes (10-under 20, 20-under 30, etc.).What would the frequency be for class 30-under 40?

(Multiple Choice)

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Question 70

A cumulative frequency distribution provides a running total of the frequencies through the classes of a frequency distribution.

(True/False)

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Question 71

A scatter plot is useful for examining the relationship between two numerical variables.

(True/False)

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Question 72

The 2010 and 2012 market share data of three competitors (Alston, Baren, and Clemson)in an oligopolistic industry are presented in the following pie charts.Total sales for this industry were $1.5 billion in 2010 and $1.8 billion in 2012.Baren's sales in 2010 were ___________.

(Multiple Choice)

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Question 73

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 2013. Approximately ________ corporations had capitalizations of $200,000,000 or less.

(Multiple Choice)

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Question 74

Consider the following frequency distribution: Class Interval Frequency 10 -under 20 15 20 -under 30 25 30 -under 40 10 What is the cumulative frequency of the second class interval?

(Multiple Choice)

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Question 75

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. What trends can be identified from this graph?

(Multiple Choice)

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Question 76

Your company is doing market research to assess the feasibility of a new product.The market research team gathers pricing information of all the existing products that would compete with your company's product.The most expensive brand is priced at $22.95, and the least expensive one at $20.59.If a class width of 0.25 is used, then the number of classes will be

(Multiple Choice)

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Question 77

A person has decided to construct a frequency distribution for a set of data containing 60 numbers.The lowest number is 23 and the highest number is 68.If 7 classes are used, the class width should be approximately _______.

(Multiple Choice)

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Question 78

Pinky Bauer, Chief Financial Officer of Harrison Haulers, Inc., suspects irregularities in the payroll system and orders an inspection of "each and every payroll voucher issued since January 1, 2000." Each payroll voucher was inspected and the following frequency distribution was compiled. Errors per Voucher 0 -under 2 2-under 4 4-under 6 6-under 8 8-under 10 Number of Vouchers 500 400 300 200 100 The midpoint of the first class interval is _________.

(Multiple Choice)

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Question 79

Consider the following stem and leaf plot: Stem Leaf 1 0,2,5,7 2 2,3,4,8 3 0,4,6,6,9 4 5,8,8,9 5 2,7,8 Suppose that a frequency distribution was developed from this plot, and there were 5 classes (10-under 20, 20-under 30, etc.).What was the highest number in the data set?

(Multiple Choice)

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Question 80

Consider the relative frequency distribution given below: 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 of the number were less than 80?

Consider the following stem and leaf plot: Stem Leaf 1 0,2,5,7 2 2,3,4,8 3 0,4,6,6,9 4 5,8,8,9 5 2,7,8 Suppose that a frequency distribution was developed from this plot, and there were 5 classes (10-under 20, 20-under 30, etc.).What would be the relative frequency of the class 20-under 30?

The following graphic of residential housing data (selling price and size in square feet)indicates _____________.

One rule that must always be followed in constructing frequency distributions is that adjacent classes must overlap.

To compare two series of data during the same time period, the graph should show the first and then show the second after that, all in one line.

Each day, the office staff at Oasis Quick Shop prepares a frequency distribution and an ogive of sales transactions by dollar value of the transactions.Saturday's cumulative frequency ogive follows. The percentage of sales transactions on Saturday that were at least $100 each was _____________.

A scatter plot shows how the numbers in a data set are scattered around their average.

Consider the following stem and leaf plot: Stem Leaf 1 0,2,5,7 2 2,3,4,4 3 0,4,6,6,9 4 5,8,8,9 5 2,7,8 Suppose that a frequency distribution was developed from this plot, and there were 5 classes (10-under 20, 20-under 30, etc.).What would the frequency be for class 30-under 40?

A cumulative frequency distribution provides a running total of the frequencies through the classes of a frequency distribution.

A scatter plot is useful for examining the relationship between two numerical variables.

The 2010 and 2012 market share data of three competitors (Alston, Baren, and Clemson)in an oligopolistic industry are presented in the following pie charts.Total sales for this industry were $1.5 billion in 2010 and $1.8 billion in 2012.Baren's sales in 2010 were ___________.

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 2013. Approximately ________ corporations had capitalizations of $200,000,000 or less.

Consider the following frequency distribution: Class Interval Frequency 10 -under 20 15 20 -under 30 25 30 -under 40 10 What is the cumulative frequency of the second class interval?

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. What trends can be identified from this graph?

A person has decided to construct a frequency distribution for a set of data containing 60 numbers.The lowest number is 23 and the highest number is 68.If 7 classes are used, the class width should be approximately _______.

Consider the following stem and leaf plot: Stem Leaf 1 0,2,5,7 2 2,3,4,8 3 0,4,6,6,9 4 5,8,8,9 5 2,7,8 Suppose that a frequency distribution was developed from this plot, and there were 5 classes (10-under 20, 20-under 30, etc.).What was the highest number in the data set?

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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