JEE Main 201910 Apr, Evening shiftMathematicsMediumStatistics and Probability258× since 2002
If both the mean and the standard deviation of 50 observations x₁, x₂,..., x₅₀ are equal to 16, then the mean of (x₁ – 4)²
, (x_2 – 4)²
,....., (x₅₀ – 4)²
is :