SBE10 CP02

# SBE10 CP02 - Solutions to Case Problems Chapter 2...

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Solutions to Case Problems Chapter 2 Descriptive Statistics: Tabular and Graphical Methods Case Problem 1: Pelican Stores 1. There were 70 Promotional customers and 30 Regular customers. Because there are 100 observations in the sample, the frequency and percent frequency distribution are the same. Percent frequency distributions for many of the variables are given. No. of Items Percent Frequency 1 29 2 27 3 10 4 10 5 9 6 7 7 or more 8 Total: 100 Net Sales Percent Frequency 0.00 - 24.99 9 25.00 - 49.99 30 50.00 - 74.99 25 75.00 - 99.99 10 100.00 - 124.99 12 125.00 - 149.99 4 150.00 - 174.99 3 175.00 - 199.99 3 200 or more 4 Total: 100 Method of Payment Percent Frequency American Express 2 Discover 4 MasterCard 14 Proprietary Card 70 Visa 10 Total: 100 Gender Percent Frequency Female 93 CP - 1

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Chapter 2 Descriptive Statistics: Tabular and Graphical Methods Male 7 Total: 100 Martial Status Percent Frequency Married 84 Single 16 Total: 100 Age Percent Frequency 20 - 29 10 30 - 39 30 40 - 49 33 50 - 59 16 60 - 69 7 70 - 79 4 Total: 100 These percent frequency distributions provide a profile of Pelican's customers. Many observations are possible, including: A large majority of the customers use National Clothing’s proprietary credit card. Over half of the customers purchase 1 or 2 items, but a few make numerous purchases. The percent frequency distribution of net sales shows that 61% of the customers spent \$50 or more. Customers are distributed across all adult age groups. The overwhelming majority of customers are female. Most of the customers are married. 2. 3. A crosstabulation of type of customer versus net sales is shown. Net Sales 0- 25- 50- 75- 100- 125- 175- 200- 225- 250- CP - 2
Chapter 2 Descriptive Statistics: Tabular and Graphical Methods Customer 25 50 75 100 125 175 200 225 250 275 Promotional 7 17 17 8 9 3 2 3 1 2 1 70 Regular 2 13 8 2 3 1 1 30 Total 9 30 25 10 12 4 3 3 1 2 1 100 From the crosstabulation it appears that net sales are larger for promotional customers. 4. A scatterdiagram of net Sales vs. age is shown below. A trendline has been fitted to the data. From this, it appears that there is no relationship between net sales and age. Age is not a factor in determining net sales. Case Problem 2: The Motion Picture Industry This case provides the student with the opportunity to use tabular and graphical presentations to analyze data from the motion picture industry. Developing and interpreting frequency distributions, percent frequency distributions and scatter diagrams are emphasized. The interpretations and insights can be quite

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## This note was uploaded on 07/26/2009 for the course QM 3341 taught by Professor Unknown during the Spring '09 term at Troy.

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SBE10 CP02 - Solutions to Case Problems Chapter 2...

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