Mean and Variance of Numbers (Jee Mains) | ExamDuo
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Dispersion and Variance
Medium
Mean and Variance of Numbers
Let the mean and variance of 8 numbers –10, –7, –1, x, y, 9, 2, 16 be
and
, respectively. Then the mean of 4 numbers x, y, x + y + 1, |x – y| is :
SELECT ONE OPTION
A
11
B
9
C
10
D
12
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