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The mean and standard deviation of 6 obs...

The mean and standard deviation of 6 observations are 8 and 4 respectively . If each observation is multiplied by 2, find the new mean and new standard deviation of the resulting observation.

A

7.1

B

7.3

C

7.5

D

7.7

Text Solution

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The correct Answer is:
C
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PUNEET DOGRA-STATISTICS-PRE YEAR QUESTIONS
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