31 May Question Econ2300 assignment: Ch2 Quiz Exercise 2.8 METHODS AND APPLICATIONS
Question
Econ2300
assignment: Ch2 Quiz
Exercise 2.8 METHODS AND APPLICATIONS
Fifty randomly selected adults who follow professional sports were asked to name their favorite professional sports league. The results are as follows where MLB = Major League Baseball, MLS = Major League Soccer, NBA = National Basketball Association, NFL = National Football League, and NHL = National Hockey League.
NFL NBA NFL MLB MLB NHL NFL NFL MLS MLB
MLB NFL MLB NBA NBA NFL NFL NFL NHL NBA
NBA NFL NHL NFL MLS NFL MLB NFL MLB NFL
NHL MLB NHL NFL NFL NFL MLB NFL NBA NFL
MLS NFL MLB NBA NFL NFL MLB NBA NFL NFL
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1.
award:
10 out of
10.00 points
Exercise 2.8 METHODS AND APPLICATIONS Part a
(a) Find the frequency distribution, relative frequency distribution, and percent frequency distribution for these data. (Round your Relative Frequency answers to 2 decimal places.)
Sports League Frequency Relative
Frequency Percent
Frequency
MLB 11 0.22 22
MLS 3 0.06 6
NBA 8 0.16 16
NFL 23 0.46 46
NHL 5 0.10 10
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Total 50
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2.
Exercise 2.8 METHODS AND APPLICATIONS Part b
(b) Choose the frequency bar chart for these data.
3.
Exercise 2.8 METHODS AND APPLICATIONS Part c
(c) Choose the pie chart for these data.
eBook Link
Multiple Choice Difficulty: Medium
Exercise 2.8 METHODS AND APPLICATIONS Part c Learning Objective: 02-01 Summarize qualitative data by using frequency distributions, bar charts, and pie charts.
4.
Exercise 2.8 METHODS AND APPLICATIONS Part d
(d) Which professional sports league is most popular with these 50 adults? Which is least popular?
Most popular league is NFL and least popular is MLS .
Exercise 2.25 THE CASE
Forbes magazine publishes a list of “The 400 Best Big Companies” as selected by the magazine’s writers and editors. Table 2.13 gives the best companies in the retailing industry as given by this list on the Forbes.com website on February 27, 2007.
5.
Exercise 2.25 THE CASE Part b-1
(b-1) Choose the percent frequency histogram for the sales values.
6.
Exercise 2.25 THE CASE Part b-2
(b-2) What is the distribution shape?
Skewed left
Skewed right
Symmetric
Supplementary Exercise 2.66 THE CIGARETTE ADVERTISEMENT CASE
A manufacturer produces a bulk chemical product. Customer requirements state that this product must have a specified viscosity when melted at a temperature of 300°F (viscosity measures how thick and gooey the product is when melted). Chemical XB-135 is used in the production of this chemical product, and the company’s chemists feel that the amount of chemical XB-135 may be related to viscosity. In order to verify and quantify this relationship, 24 batches of the product are produced. The amount (x) of chemical XB-135 (in pounds) is varied from batch to batch and the viscosity (y) obtained for each batch is measured. Table 2.23 gives (in time order) the values of x and the corresponding values of y obtained for the 24 batches.
7.
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