Question 1

The accompanying chart shows the numbers of books written by each author in a collection of cookbooks.What type of chart is this?

Accepted Answer

A) Bar chart for qualitative data 
B) Bar chart for quantitative data 
C) Frequency histogram for qualitative data 
D) Frequency histogram for quantitative data

Question 2

A bar chart depicts the frequency or relative frequency of each category of qualitative data as a bar rising vertically from the horizontal axis.It is also acceptable for the bar to extend horizontally from the vertical axis.

Accepted Answer

A) True 
 B)False

Question 3

Exhibit 2-9.An analyst constructed the following frequency distribution on the monthly returns for 50 selected stocks:  Refer to Exhibit 2-9.The number of stocks with returns of 0% up to 10% is ________.

Accepted Answer

A) 2 
B) 8 
C) 15 
D) 25

Question 4

Exhibit 2-8.Consider the following frequency distribution.  Refer to Exhibit 2-8.The total number of observations in the frequency distribution is _____.

Accepted Answer

A) 5 
B) 6 
C) 20 
D) 24

Question 5

When constructing a scatterplot for two quantitative variables,we usually refer to one variable as x and another one as y.Typically,we graph x on the vertical axis and y on the horizontal axis.

Accepted Answer

A) True 
 B)False

Question 6

Exhibit 2-5.The following data represent scores on a pop quiz in a statistics section:  Refer to Exhibit 2-5.Suppose the data on quiz scores will be grouped into five classes.The width of the classes for a frequency distribution or histogram is closest to _____.

Accepted Answer

A) 10 
B) 12 
C) 14 
D) 16

Question 7

What type of relationship is indicated in the scatterplot?

Accepted Answer

A) No relationship 
B) A negative linear relationship 
C) A negative curvilinear relationship 
D) A positive linear or curvilinear relationship

Question 8

Exhibit 2-11.The accompanying relative frequency distribution represents the last year car sales for the sales force at Kelly's Mega Used Car Center.  Refer to Exhibit 2-11.If Kelly's employs 100 salespeople,how many of these salespeople have sold at least 65 cars in the last year?

Accepted Answer

A) 22 
B) 25 
C) 31 
D) 47

Question 9

Exhibit 2-13.The organization of the Girl Sprouts has completed its annual cookie drive.The sales are reported in the accompanying ogive.  Refer to Exhibit 2-13.Approximate the percentage of girls who sold less than 90 boxes of cookies.

Accepted Answer

A) 45% 
B) 55% 
C) 65% 
D) 75%

Question 10

The accompanying chart shows the number of books written by each author in a collection of cookbooks.What type of data is being represented?

Accepted Answer

A) Quantitative,ordinal 
B) Quantitative,ratio 
C) Qualitative,nominal 
D) Qualitative,ordinal

Question 11

A statistics instructor computes the grade and percentage of classes that each of his students attends.Construct a scatterplot from the data displayed next.Does a relationship exist between attendance and grade?

Accepted Answer

The answer of A statistics instructor computes the grade and...

Question 12

An ogive is a graph that plots the cumulative frequency (or the cumulative relative frequency)of each class above the lower limit of the corresponding class.

Accepted Answer

A) True 
 B)False

Question 13

Exhibit 2-2.The following is a list of five of the world's busiest airports by passenger traffic for 2010.  Refer to Exhibit 2-2.The percentage of passenger traffic in the five busiest airports that occurred in Asia is closest to __________.

Accepted Answer

A) 18% 
B) 21% 
C) 25% 
D) 38%

Question 14

Exhibit 2-9.An analyst constructed the following frequency distribution on the monthly returns for 50 selected stocks:  Refer to Exhibit 2-9.The proportion of stocks with returns of 0% up to 10% is _____.

Accepted Answer

A) 0.30 
B) 0.50 
C) 0.66 
D) 0.80

Question 15

In the following pie chart representing a collection of cookbooks,which author has more titles?

Accepted Answer

A) Jeff Smith 
B) Julia Child 
C) Rachel Ray 
D) Paula Deen

Question 16

Exhibit 2-5.The following data represent scores on a pop quiz in a statistics section:  Refer to Exhibit 2-5.Suppose the data is grouped into 5 classes,and one of them will be "30 up to 44"-that is,{x;30 ≤ x < 44}.The frequency of this class is ____.

Accepted Answer

A) 0.20 
B) 0.25 
C) 4 
D) 5

Question 17

For which of the following data sets will a pie chart be most useful?

Accepted Answer

A) Heights of high school freshmen 
B) Ambient temperatures in the U.S.Capitol Building 
C) Percentage of net sales by product for Lenovo in 2011 
D) Growth rates of firms in a particular industry

Question 18

What graphical tool is best used to display the relative frequency of grouped quantitative data?

Accepted Answer

A) Ogive 
B) Pie chart 
C) Bar chart 
D) Histogram

Question 19

What type of relationship is indicated in the scatterplot?

Accepted Answer

A) No relationship 
B) A negative linear relationship 
C) A negative curvilinear relationship 
D) A positive linear or curvilinear relationship

Question 20

Exhibit 2-3.A city in California spent six million dollars repairing damage to its public buildings in 2010.The following table shows the categories where the money was directed.  Refer to Exhibit 2-3.How much did the city spend to fix damage caused by mold?

Accepted Answer

A) $360,000 
B) $720,000 
C) $1,440,000 
D) $1,800,000

Exam 2: Tabular and Graphical Methods

The accompanying chart shows the numbers of books written by each author in a collection of cookbooks.What type of chart is this?

A bar chart depicts the frequency or relative frequency of each category of qualitative data as a bar rising vertically from the horizontal axis.It is also acceptable for the bar to extend horizontally from the vertical axis.

Exhibit 2-9.An analyst constructed the following frequency distribution on the monthly returns for 50 selected stocks: Refer to Exhibit 2-9.The number of stocks with returns of 0% up to 10% is ________.

Exhibit 2-8.Consider the following frequency distribution. Refer to Exhibit 2-8.The total number of observations in the frequency distribution is _____.

When constructing a scatterplot for two quantitative variables,we usually refer to one variable as x and another one as y.Typically,we graph x on the vertical axis and y on the horizontal axis.

Exhibit 2-5.The following data represent scores on a pop quiz in a statistics section: Refer to Exhibit 2-5.Suppose the data on quiz scores will be grouped into five classes.The width of the classes for a frequency distribution or histogram is closest to _____.

What type of relationship is indicated in the scatterplot?

Exhibit 2-11.The accompanying relative frequency distribution represents the last year car sales for the sales force at Kelly's Mega Used Car Center. Refer to Exhibit 2-11.If Kelly's employs 100 salespeople,how many of these salespeople have sold at least 65 cars in the last year?

Exhibit 2-13.The organization of the Girl Sprouts has completed its annual cookie drive.The sales are reported in the accompanying ogive. Refer to Exhibit 2-13.Approximate the percentage of girls who sold less than 90 boxes of cookies.

The accompanying chart shows the number of books written by each author in a collection of cookbooks.What type of data is being represented?

A statistics instructor computes the grade and percentage of classes that each of his students attends.Construct a scatterplot from the data displayed next.Does a relationship exist between attendance and grade?

An ogive is a graph that plots the cumulative frequency (or the cumulative relative frequency)of each class above the lower limit of the corresponding class.

Exhibit 2-2.The following is a list of five of the world's busiest airports by passenger traffic for 2010. Refer to Exhibit 2-2.The percentage of passenger traffic in the five busiest airports that occurred in Asia is closest to __________.

Exhibit 2-9.An analyst constructed the following frequency distribution on the monthly returns for 50 selected stocks: Refer to Exhibit 2-9.The proportion of stocks with returns of 0% up to 10% is _____.

In the following pie chart representing a collection of cookbooks,which author has more titles?

Exhibit 2-5.The following data represent scores on a pop quiz in a statistics section: Refer to Exhibit 2-5.Suppose the data is grouped into 5 classes,and one of them will be "30 up to 44"-that is,{x;30 ≤ x < 44}.The frequency of this class is ____.

For which of the following data sets will a pie chart be most useful?

What graphical tool is best used to display the relative frequency of grouped quantitative data?

What type of relationship is indicated in the scatterplot?

Exhibit 2-3.A city in California spent six million dollars repairing damage to its public buildings in 2010.The following table shows the categories where the money was directed. Refer to Exhibit 2-3.How much did the city spend to fix damage caused by mold?