timer Asked: May 6th, 2013

Question description

Required Text

  1. Tanner, D., &
    Youssef – Morgan, C. (2013). Statistics for Managers. San Diego, CA: Bridgepoint Education, Inc.
    This text is a Constellation™ course digital
    materials (CDM) title


A marketing agency is interested in the buying habits of those who shop online
versus those who shop in person.  In your discussion post, address each of the
following and explain your reasoning as to why you picked the specific

  1. A database is created and shoppers are classified as online or in-person
    shoppers. Such classifications represent data of which scale?  Explain your
  2. Online and in-person shoppers are to be compared on their relative incomes.
    Income data represent data of which scale?  Explain your reasoning.
  3. If shoppers are also ranked from the most to the least frequent shoppers,
    those rankings represent data of which scale? Explain your reasoning.
  4. Shoppers are asked to complete a customer satisfaction survey. In response
    to each question on the survey, the shoppers circle one of five answers:
    strongly agree, agree, neutral, disagree, or strongly disagree. Their responses
    are data of which scale?  Explain your reasoning.
  5. What measure(s) of central tendency will be most informative for each of the
    above data?  Justify why each measure is most informative.
  6. What would be more critical for the marketing agency to utilize; descriptive
    or inferential statistics?  Why?


The manager of a sandwich shop gathers data on what people spend on lunch on
a particular day of the week. 

The results are $4.20, $4.22, $2.35,
$4.32, $5.25, $6.48, $6.78, $8.59, $6.95, $5.52, $6.83, $7.35, $4.36, $9.39,

To the degree that this represents the population of all those
who eat lunch at sandwich shops, what percentage of customers spend:

  1. less than $4.34?
  2. between $3.50 and $4.80?
  3. less than $2.35?

Imagine that you are the manager of a sandwich shop.  Based on your
calculations, what do you think is the best pricing point for your shop? What
would you do to increase sales at the sandwich shop?


Problem Set: Week One

Complete the problems below and submit your work in one Word
document. Be sure to show all of your work and clearly label all calculations.
Calculations completed in Excel must be copied and pasted into a single Word
document.  No Excel documents will be graded.

For additional assistance
with these calculations reference the Recommended Materials for Week

TIP: For help copying and pasting information from Excel to Word
go to http://office.microsoft.com/en-us/word-help/copy-excel-data-or-charts-to-word-HP010198874.aspx
or watch the “Excel Tips - Tip#48: Copy from Excel to Word” video found in Week
One Recommended Resources.

  1. Problem 1

    The performances of a group of interns are
    evaluated by their supervisors at the end of their internships.

    scores are: 55, 47, 62, 27, 50, 49, 66, 53, 50, 44, 63, 59.

    Complete the
    calculations below using this data.  Show all of your work and clearly
    label each of your calculations.

    1. the mean
    2. the median
    3. the range
    4. the standard deviation
    5. the variance

  2. Problem 2

    The Anxiety General Stress Test (ANGST)
    has been designed to gauge the level of psychological stress management trainees
    experience when they are under pressure.

    For a random sample of trainees
    the scores are as follows: 47, 49, 53, 53, 54, 58, 61, 64, 75,

    Complete the calculations below using this data.  Show all of
    your work and clearly label each of your calculations.

    1. What is the z score equivalent of ANGST = 81?
    2. What is the probability that someone selected at random will score 81 or
    3. What percentage of all trainees will score between 60 and 75?

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