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Exam 2: Graphs,charts and Tablesdescribing Your Data

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Question 31

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In a recent study at First National Bank,a frequency count was made for the variable marital status for the bank's 10,000 customers.It would also be appropriate to develop a histogram for this variable to show how marital status is distributed.

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Question 32

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The Fitness Center manager has collected data on the number of visits to the club each week for the past 8 weeks.These data are shown as follows.Which of the following statements is most correct?

A) The proper graph for displaying these data is a pie chart.
B) There has been a gradual downward trend in these data.
C) A frequency histogram should be developed to help identify the trend in these data.
D) The data lend themselves to a line chart.

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Question 33

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The J.B.Hanson Company is interested in analyzing the relationship between end-of-the-week inventory levels and sales for the same week.The graph that most likely would be used to show this relationship is a histogram.

Which of the following is not considered desirable when constructing a frequency distribution for continuous data?

The difference between bar charts and histograms is that bar charts always show percentage while histograms always show frequency.

Frequency distributions can be formed from which of the following types of data?

Joint frequency distributions are used to display:

In constructing a stem and leaf diagram,there is a hard-and-fast rule for defining the stem and the leaves.

The sales manager at Western Furniture Company tracked data on the number of customers who came into the store each day and the total dollar volume of sales at the store during the same day.She is considering putting together a report for top management and wishes to show the relationship between these two variables.Which of the following graphs would likely be most useful? She has a sample of 36 days worth of data.

In situations involving two or more variables,both histograms and bar charts can be used for multiple variables on the same graph.

Which of the following is true about the difference between stem and leaf diagrams and histograms?

On a scatter diagram,the independent variable should be placed on the horizontal axis and the dependent variable should be placed on the vertical axis.

Sawyer & Company is a law firm in Dallas,Texas.Recently,the administrative manager prepared a report for the managing partners that showed the number of court cases handled by the firm monthly over the past three years.One of the objectives of graphing these data might have been to identify a trend in the number of court cases.

If the Viking Sales Company plans to display the sales for each of its six major products for the year 2001,an effective chart to do this would be a histogram.

A study was recently done in which the brand preference for breakfast cereal was analyzed against the gender of the shopper.The study consisted of 200 male shoppers and 300 female shoppers.Three different cereal brands were considered: A,B,and C.A total of 250 female shoppers preferred brand A,25 female shoppers preferred brand C.The number of female shoppers that preferred brand B was:

Histograms cannot have gaps between the bars,whereas bar charts can have gaps.

The Canyon Water Company collects data on the number of gallons of water consumed during a month for each customer.The production manager has divided the usage into 6 classes.To display these data effectively,she could use which of the following types of graphs to convey information about the water usage?

Bar charts can show either frequency or percentage.

To show the relationship between amount of rainfall and the number of car accidents,the best type of graph to use is a scatter diagram.

Which of the following is a reason for constructing a joint frequency distribution?