The following assignment is worth ten points. Please submit your work in a neat format (no crossing-out). Each answer must show the symbolic formula, numbers inserted in the symbols, answer boxed in.
The following group frequency distribution resulted from scores received on a test on sit-ups per minute given to a high school physical education class:
X f
70-74 2 |
65-69 4 |
60-64 7 |
55-59 9 |
50-54 10 |
45-49 12 |
40-44 13 |
35-39 11 |
30-34 7 |
25-29 5 |
20-24 3 |
1. Five points:
Find the score representing the 90th percentile
Find the score representing the 65th percentil
2. Five points:
What is the percentile of a score of 42
What is the percentile of a score of 63