# STAT250 Northern Virginia Target versus Safeway Food Prices Data Analysis

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### Question Description

Data Analysis

Your submitted document should include the following items. Points will be deducted if the following are not included.

1. Type your Name and STAT 250 with your correct section number (e.g. STAT 250-xxx) right justified and then Data Analysis Assignment #1 centered on the top of page 1 below your name the begin your document.
3. Your document should include the ANSWERS ONLY with each answer labeled by its corresponding number and subpart. Keep the answers in order. Do not include the questions in your submitted document.
4. Generate all requested graphs and tables using StatCrunch.

Full assignment Instructions, as well as a example is attached as a word file.

https://www.statcrunch.com/5.0/group.php?groupid=8220

I will provide the login info...

Extra Notes:

- For the questions that require calculation, you can do it on a paper but would have to type the solution into word document.

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TabbyK
School: UT Austin

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1
Name
Course
Data Analysis Assignment
Problem 1: Appropriateness of Inference
a) Food Prices: Target versus Safeway
i)
D because the mean difference from the paired (dependent) samples needs to be
equal to zero if there is no significant difference.
ii)

iii) The graph shape is only slightly skewed to the left implying that only a few points are
below the average prices.
iv)

2

v) No, it does not show any outliers.
vi) Inference is not appropriate because there mean difference is insignificant and there
are no outliers.
b) GMU Health Center Waiting Time.
i)
because its one sample being tested for average time.
ii)

3

iii) It is skewed to the left implying that more than 50% of the participants experienced
waiting time less than 100.

4

iv) Yes, the boxplot show one outlier above 250 minutes of waiting time.
v) Yes, inference ...

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