Directions

1. What are the three characteristics of a normal curve? (3 pts)
2. Why do we use standard scores? (2 pts)

Problem 3:

Using Excel - Download a copy of the file (UNIT_5_ASSIGN_PART_I_PROBLEM_3.xlsx Download UNIT_5_ASSIGN_PART_I_PROBLEM_3.xlsx) that has the a sample of five values listed below. calculate the mean and standard deviation (STDEV.s) of the five values:

Variable X	Z-Scores		Mean
12			Standard Deviation
15
11
13
10

3. In Excel - using the observed value, mean, and standard deviation - calculate the five z-scores utilizing your preferred function/formula. Provide a screenshot of the z scores from Excel and paste it into your assignment document (be sure I can see the numbers and labels clearly). (5 pts)