Statistics · Mathematics · KCET
Start PracticeMCQ (Single Correct Answer)
KCET 2023
The mean of 100 observations is 50 and their standard deviation is 5. Then, the sum of squares of all observations is
KCET 2022
If the standard deviation of the numbers $$-1, 0,1, k$$ is $$\sqrt{5}$$ where $$k>0$$, then $$k$$ is equal to
KCET 2021
The standard deviation of the numbers $$31,32,33 \ldots 46,47$$ is