Question
Mathematics Question on Variance and Standard Deviation
| The standard deviation for the following distribution:Class | 30-40 | 40-50 | 50-60 | 60-70 | 70-80 | 80-90 | 90-100 |
|---|---|---|---|---|---|---|---|
| Frequency | 3 | 7 | 12 | 15 | 8 | 3 | 2 |
A
12.89
B
13.98
C
14.18
D
15.38
Answer
14.18
Explanation
Solution
The correct option is(C): 14.18