The mean of 8 observations is 40. If each observation is divided by 2, then the mean of the new
data set is ..................
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Step-by-step explanation:
We know that Mean=Sum of terms/number of terms
As given
Mean=40 and number of terms=8 so
40=Sum of terms/8
Sum of terms=40*8=320 now by increasing each term by 5 sum of terms will increase by 8*5=40 so new Sum will be
Sum of terms=320+40=360
Again solving to find mean
Mean=Sum of terms/number of terms
Mean=360/8=45
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