COE 502 Assignment #2

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Directions: You will probably want to print a copy of this assignment, work out your answers, then return to this page to submit your work. You will see the correct solution to each question after you submit your work, so it might be wise to wait until you have tried to solve the problems yourself before asking for help.

You will be able to see your submitted work after you are done by going to this address: http://glass.ed.asu.edu/stats/assignments/id#.html, where your student ID # is substituted for "id#" in the address, i.e., if your ID # is 333546677, your completed assignments will be stored in the file http://glass.ed.asu.edu/stats/assignments/333546677.html

Your Name:

Date:

You must record your student ID# or your completed assignment will not register Student ID # (9 digits, no dashes):

Assignment 2

1. For the teacher salary data for both Desertview and Mountainview, calculate each of the following summary statistics and compare them: Mean, Median, Standard Deviation. Enter your answers here:

   	Desertview	Mountainview
   Mean
   Median
   St.Dev.

2. Calculate the Skew for each distribution and record the values of the skewness coefficient in the table below:

   	Desertview	Mountainview
   Skewness

3. Is the relationship between the Mean and the Median of the distribution consistent with what one would expect from knowing the skewness of the distribution? (Sorry, this is not a "yes-or-no" question. Explain why you draw the conclusion you do.)

4. a) What is the mean teacher salary for all the teachers in Desertview and Mountainview school districts combined?

   b) How did you determine this figure?

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