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 lowest number in the data set?

A) 0 B) 10 C) 7 D) 2 E) 1 A) 0 B) 10 C) 7 D) 2 E) 1

The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed. \[\begin{array} { l c } \text { Class Interval } & \text { Frequency } \\ 20 \text {-under } 40 & 30 \\ 40 \text {-under } 60 & 45 \\ 60 \text {-under } 80 & 80 \\ 80 \text {-under } 100 & 45 \end{array}\] What is the relative frequency of the second class?

A) 0.455 B) 0.900 C) 0.225 D) 0.750 E) 0.725 A) 0.455 B) 0.900 C) 0.225 D) 0.750 E) 0.725

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 cumulative frequency of the second class interval?

A) 25 B) 45 C) 70 D) 100 E) 250 A) 25 B) 45 C) 70 D) 100 E) 250

Exam 2: Visualizing Data With Charts and Graphs

The following pie chart shows the market share of the only three brands in a market at the end of last year: If by the end of the current year, brand C increases its market share to 51%, brand B maintains its market share, and total market sales increase by 15%, then this year's sales for brand A will be

(Multiple Choice)

4.8/5

(25)

Question 41

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 lowest number in the data set?

(Multiple Choice)

4.9/5

(33)

Question 42

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. Which of the following may be a false statement?

(Multiple Choice)

4.8/5

(39)

Question 43

For a company in a gardening supplies business, the best graphical presentation of the percentage of the total budget spent in each different expense category is the stem and leaf plot.

(True/False)

4.7/5

(27)

Question 44

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 class mark of the first class interval will be

(Multiple Choice)

4.8/5

(36)

Question 45

In contrast to quantitative data graphs that are plotted along a numerical scale, qualitative graphs are plotted using non-numerical categories.

(True/False)

4.7/5

(41)

Question 46

The staff of Mr.Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a cumulative frequency ogive of waiting time for walk-in customers. The total number of walk-in customers included in the study was _________.

(Multiple Choice)

4.8/5

(32)

Question 47

A scatter plot is a two-dimensional graph plot of data containing pairs of observations on two numerical variables.

(True/False)

4.9/5

(37)

Question 48

The staff of Mr.Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a cumulative frequency ogive of waiting time for walk-in customers. The percentage of walk-in customers waiting between 1 and 6 minutes was ___.

(Multiple Choice)

4.9/5

(28)

Question 49

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 under $100 each was _____________.

(Multiple Choice)

4.8/5

(36)

Question 50

According to the following graphic, the most common cause of PCB Failures is a _____________.

(Multiple Choice)

4.9/5

(36)

Question 51

Given two class intervals and their respective frequencies and relative frequencies, the ratio of the frequencies _________ the ratio of the relative frequencies.

(Multiple Choice)

4.9/5

(37)

Question 52

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. In what years were red shirt sales higher than blue shirt sales?

(Multiple Choice)

4.7/5

(37)

Question 53

Time-series data should be shown from oldest time period to the most recent.

(True/False)

4.9/5

(36)

Question 54

The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed. Class Interval Frequency 20 -under 40 30 40 -under 60 45 60 -under 80 80 80 -under 100 45 What is the relative frequency of the second class?

(Multiple Choice)

4.8/5

(42)

Question 55

If the individual class frequency is divided by the total frequency, the result is the median frequency.

(True/False)

4.9/5

(34)

Question 56

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

(Multiple Choice)

4.7/5

(35)

Question 57

A cumulative frequency polygon is also called an ogive.

(True/False)

4.8/5

(43)

Question 58

One advantage of a stem and leaf plot over a frequency distribution is that the values of the original data are retained.

(True/False)

4.9/5

(30)

Question 59

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, and there were 5 classes (10-under 20, 20-under 30, etc.).What is the cumulative frequency for the 30-under 40 class interval?

(Multiple Choice)

4.9/5

(34)

Question 60

Showing 41 - 60 of 113

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 lowest number in the data set?

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. Which of the following may be a false statement?

For a company in a gardening supplies business, the best graphical presentation of the percentage of the total budget spent in each different expense category is the stem and leaf plot.

In contrast to quantitative data graphs that are plotted along a numerical scale, qualitative graphs are plotted using non-numerical categories.

The staff of Mr.Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a cumulative frequency ogive of waiting time for walk-in customers. The total number of walk-in customers included in the study was _________.

A scatter plot is a two-dimensional graph plot of data containing pairs of observations on two numerical variables.

The staff of Mr.Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a cumulative frequency ogive of waiting time for walk-in customers. The percentage of walk-in customers waiting between 1 and 6 minutes was ___.

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 under $100 each was _____________.

According to the following graphic, the most common cause of PCB Failures is a _____________.

Given two class intervals and their respective frequencies and relative frequencies, the ratio of the frequencies _________ the ratio of the relative frequencies.

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. In what years were red shirt sales higher than blue shirt sales?

Time-series data should be shown from oldest time period to the most recent.

The number of phone calls arriving at a switchboard each hour has been recorded, and the following frequency distribution has been developed. Class Interval Frequency 20 -under 40 30 40 -under 60 45 60 -under 80 80 80 -under 100 45 What is the relative frequency of the second class?

If the individual class frequency is divided by the total frequency, the result is the median frequency.

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

A cumulative frequency polygon is also called an ogive.

One advantage of a stem and leaf plot over a frequency distribution is that the values of the original data are retained.

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, and there were 5 classes (10-under 20, 20-under 30, etc.).What is the cumulative frequency for the 30-under 40 class interval?

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

Filters