# Statistics

Homework Assignment 1

1. A researcher has obtained the number of hours worked per week during the summer for a sample of 15 students.

[40,  25,  35,  30,  20,  40,  30,  20,  40,  10,  30,  20,  10,  5,  20]

Using this data set and Excel Template 2 (available in Canvas), compute the following:

1. Median
2. Mean
3. Mode
4. 40th percentile
5. 25th percentile
6. 50th percentile
7. 75th percentile
8. Interquartile Range
9. Range
10. Sample Variance
11. Standard Deviation

Unit 2: Homework Assignment 2

A hotel asked its customers to rate their stays as Excellent, Good, Fair, or Poor.  The accompanying table shows the frequency of each rating as well as the gender of the customer.

 Rating Men Women Excellent 10 Good 20 13 Fair 17 Poor

1. Determine the probability that a randomly selected customer rated his or her stay as either Good or Fair.
2. Determine the probability that a randomly selected customer rated his or her stay as other than Poor.
3. Determine the probability that a randomly selected customer was either a woman or rated their stay as fair.
4. Determine the probability that a randomly selected customer rated her stay as good, given the customer was a woman.

**Discussion Questions: Post your initial responses to the discussion forum by Wednesday 11:59
p.m. and respond to the discussion of others by Saturday 11:59 p.m.
o Prompt: Consider the biblical view of planning, honesty and accuracy in collecting
data and reporting; research ethics, and validity and reliability in measurement
instruments and others you may feel strongly about. How will you apply a Christian

o Requirements: 250 words minimum initial post

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