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Exam 2: Charts and Graphs

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Question 1

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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

A) 9
B) 9.4
C) undetermined, so you can choose either 9 or 10
D) undetermined, so you must choose another class width
E) 10

F) A) and E)
G) B) and D)

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Question 2

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The number of phone calls arriving at a switchboard each hour has been recorded,and the following frequency distribution has been developed.

A) 80
B) 100
C) 95
D) 90
E) 85

F) A) and E)
G) B) and E)

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Question 3

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A recent survey of U.S.automobile owners showed the following preferences for exterior automobile colors: What type of graph is used to depict exterior automobile color preferences?

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

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

Consider the relative frequency distribution given below: There were 60 numbers in the data set. How many numbers were in the interval 20-under 40?

Consider the relative frequency distribution given below: There were 60 numbers in the data set. How many of the number were less than 80?

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

An instructor made a frequency table of the scores his students got on a test The midpoint of the last class interval is _________.

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

A summary of data in which raw data are grouped into different intervals and the number of items in each group is listed is called a frequency distribution.

A histogram can be described as a type of vertical bar chart.

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

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

Consider the following frequency distribution: What is the cumulative frequency of the second class interval?

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

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: What is the midpoint of the last class interval?

Dot Plots are mainly used to display a large data set.

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 approximately count 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: The relative frequency of the fourth class interval is _________.