DAT 565 Week 1 Assignment

DAT 565 Week 1 Assignment: Statistics Analysis

Assignment Content

Resource: Pastas R Us, Inc. Database

Review the Wk 2 – Apply: Statistical Report assignment.

In preparation for writing your report to senior management next week, conduct the following descriptive statistics analyses with Excel®. Answer the questions below in your Excel sheet or in a separate Word document:

• Insert a new column in the database that corresponds to “Annual Sales.” Annual Sales is the result of multiplying a restaurant’s “SqFt.” by “Sales/SqFt.”
• Calculate the mean, standard deviation, skew, 5-number summary, and interquartile range (IQR) for each of the variables.
• Create a box-plot for the “Annual Sales” variable. Does it look symmetric? Would you prefer the IQR instead of the standard deviation to describe this variable’s dispersion? Why?
• Create a histogram for the “Sales/SqFt” variable. Is the distribution symmetric? If not, what is the skew? Are there any outliers? If so, which one(s)? What is the “SqFt” area of the outlier(s)? Is the outlier(s) smaller or larger than the average restaurant in the database? What can you conclude from this observation?
• What measure of central tendency is more appropriate to describe “Sales/SqFt”? Why?

Please note the assignment must be submitted as a word document in proper APA format. Any calculations, graphs, tables, etc that you do in the Excel worksheet should be cut and pasted into your Word document. DO NOT SUBMIT the spreadsheet.

Submit your assignment.

Resources

• Center for Writing Excellence
• Reference and Citation Generator
• Grammar and Writing Guides

An additional resource is the data analysis package in Excel. Here is a document that will help you set it up and use it. The descriptive statistics package in the data analysis will calculate all of the needed descriptive metrics and create a nice table suitable to cut and pasted into your final Word document.

Let me know if you need any help setting this up.

Notes for using the Data Analysis Add-in[1].pdf

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