The document contains test results from 10 grade 10 students which range from 4.5 to 22. It then provides instructions on how to calculate the mean, mode, median, percentage, and percentile ranking for a given test score. For a test score of 17, the percentage would be 65% and the percentile ranking would be 55%. For a test score of 12, the percentage would be 46% and the percentile ranking would be the 25th percentile.

1. 1

2. Grade 10 test results from 10 students
12, 14, 4.5, 16, 22, 20, 11, 22, 19, 17
Test out of 26
Calulate the mean:
2

3. 12, 14, 4.5, 16, 22, 20, 11, 22, 19, 17
Determine the mode:
3

4. 12, 14, 4.5, 16, 22, 20, 11, 22, 19, 17
Determine the median:
4

5. Calculate your percentage if your mark was 17.
5

6. Calculate your PERCENTILE RANKING
Ranking: how does one mark compare
with all the others.
5 + 0.5(1) X 100
PR =
10
= 55%
12, 14, 4.5, 16, 22, 20, 11, 22, 19, 17
6

7. Equation: PR = B + 0.5(E) X 100
n
B: the number of scores Below a given score
E: the number of scores Equal to a given score,
including the given score.
n: the total number of scores
** do not show with decimal values, round
up to next whole number**
7

8. What if your mark was 12?
Percentage: 46%
12, 14, 4.5, 16, 22, 20, 11, 22, 19, 17
Percentile Ranking: 25th percentile
8

9. Your Assignment
Page V­F­6
Questions 1 ­ 7
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