Question

if the standard deviation of data is 4.5 and each value of the data decreased by 3 ,then the new standard deviation is..?

Answer 1

Answer:

Step-by-step explanation:

As per the given question,

We have been provided the standard deviation of a data = 4.5

As we know that the formula of standard deviation is

,

x-bar = mean of the data

As per question if each data is decreased by 5, that means. mean value of the data will be changed but in overall standard deviation, there will be no change.

That means the new standard deviation is same as the old standard deviation.

Hence, the required standard deviation = 4.5

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