Question
Quantitative Aptitude Question on Mean, median, mode and standard deviation
Standard deviation is:
A
the positive square of average of squared difference of each value from the mean.
B
the positive square root of the average of squared difference of each value from the mean.
C
the square root of the average of each value from the mean.
D
the square of the average of each value from the mean.
Answer
the positive square root of the average of squared difference of each value from the mean.
Explanation
Solution
The correct option is(B): the positive square root of the average of squared difference of each value from the mean