Teaching AWES Army Public School TGT Mock Test 2024 Mathematics Statistics Variance and Standard Deviation
Let a, b ∈ R. Let the mean and the variance of 6 observations –3, 4, 7, –6, a, b be 2 and 23, respectively. The mean deviation about the mean of these 6 observations is :
1
\(\frac{13}{3}\)
2
\(\frac{16}{3}\)
3
\(\frac{11}{3}\)
4
\(\frac{14}{3}\)