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The variance of 6 values is 64. If each value is doubled, find the standard deviation.

A16

B11

C13

D17

Answer:

A. 16

Read Explanation:

Answer: A Variance = σ² Standard deviation = √(σ²) = √64 Standard deviation = σ = 8 New standard deviation = λσ (where λ= n times each value) = 2 × 8 = 16 Hence the answer is 16.


Related Questions:

The frequency distribution of diameter (D) of 101 steel balls is given in the following list-

D(mm)

43

44

45

46

47

48

No.

13

15

22

21

16

14

find the mean of the diameter in mm

Find the median of the first 5 whole numbers.
What is the difference between the median and mode of S={1, 2, 4, 4, 8, 14, 32, 64}?.
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The measure of dispersion which uses only two observations is called: