Calculation of the mean, median, standard deviation, range
You are given the following frequency distribution for the number of errors 10 students made in a test
|
Errors |
Frequency |
|
0-2 |
14 |
|
3-5 |
13 |
|
6-8 |
11 |
|
9-11 |
8 |
|
12-14 |
9 |
Find: a. mean b. variance c. standard deviation.
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