# 2 - Due: Monday, September 10, 2007 11:59 PM EDT...

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Due: Monday, September 10, 2007 11:59 PM EDT Current Score: 29 out of 30 Question Score Submission Options Description Homework #2 covers graphical summaries (histograms, stem- and-leaf displays, and boxplots) and numerical summaries (median, mean and quartiles) of quantitative data. These topics are in sections 2.2 and 2.3 of Lecture Unit 2 in the coursepack. You are allowed 4 submissions for most questions on the assignment. This homework is worth 30 points. The assignment is due by 11:59 pm Monday, Sept. 10. Instructions Homework #2 You are allowed 4 submissions for most questions on the assignment. This homework is worth 30 points. The due date is 11:59 pm Monday, Sept. 10. 1. 5/5 points Last Response | View Saved Work | Show Details All Responses Notes
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The number of books shipped out daily by Amazon.com was recorded for 100 days The data is in this Excel file Draw a histogram for the data as follows: click on the Excel file link above choose "Save" from the dialogue window save the file to a destination of your choice open the file in Excel in Excel click Tools, Data Analysis, Histogram in the resulting Histogram dialogue box enter the input range (i.e. the location of the data in the spreadsheet, for example A2:A101) and click "Chart Output" at the bottom of the window then click OK Question 1 . After you draw the histogram, select the choice below that describes the data. (_) (_) The histogram is symmetric and mound-shaped, with many daily shipment numbers around 18,000 and fewer daily shipment numbers more than 20,000 and less than 16,000. (_) (_) The histogram clearly shows that the median number of books shipped daily should NOT be used as a measure of center. (_) (_) The histogram indicates that the interquartile range (IQR) is NOT appropriate to use as a measure of spread for this data. (_) (_) The histogram is right-skewed with most of the daily shipment numbers less than about 17,000 and just a few daily shipment numbers greater than 21,000. (o) (o) The histogram is left-skewed, with most of the books shipped daily greater than about 21,000, but with a few daily shipments less than about 15,000. (_) (_) The histogram is bimodal, with many daily shipment numbers in the 10,000 to 12,000 range and 20,000 to 22,000 range but few daily shipment amounts bewteen these ranges.
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Question 2 . What is the median number of books shipped daily by Amazon.com? 22423 22587 median Question 3 . The value of the lower quartile Q L is 19208.75 (using the method for calculating percentiles discussed in lecture). Use the method for calculating percentiles discussed in lecture to calculate the upper quartile Q U . 25307.75
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This note was uploaded on 03/22/2008 for the course BUS 350 taught by Professor Reiland during the Spring '08 term at N.C. State.

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# 2 - Due: Monday, September 10, 2007 11:59 PM EDT...

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