Correct Variance Calculation (Jee Mains) | ExamDuo
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Dispersion and Variance
Medium
Correct Variance Calculation
The mean and standard deviation of 10 observations are 20 and 8 respectively. Later on, it was observed that one observation was recorded as 50 instead of 40. Then the correct variance is:
SELECT ONE OPTION
A
14
B
13
C
12
D
11
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