NAME:
HPER 3150
Descriptive Statistics Review
Complete the operations in order to determine the open box values.
8 / 2 - 4 =
* - +
2 / 2 - 5 =
- * /
10 + 5 / 1 =
= = =
What is the most stable measure of variability and WHY is this true?
What does the coefficient of variation tell you?
What does a V=.8 mean?
Use Table 3.3 and the following formulas to calculate the missing data, given M=700, S=100
P = 50 + Z percentile (+: add to 50, -: subtract from 50)
Percentile T score z score Raw score
68
68
835
.57
Jonte scored 110 and Lee scored 105 on a test. The mean is 120 and the s is 10. What percentage of
people scored between Jonte and Lee?
Juan scored 120 on a test with a mean of 130 and a standard deviation of 15. Chiante obtained a T score
of 43. Marlin had a z score of –0.39. Sarah achieved the 43rd percentile. Who had the best relative
performance?
Use the following information to answer these questions:
Given: mean = 200, s = 20, John's score = 210, and Allison's score = 225.
What percentage of people scored greater than or equal to Allison?
What are John's and Allison's T scores?
What percentage of people scored between John and Allison?
S
MX
Z
ZT 1050
