Question

If all observations in a distribution are increased by 6, then the variance of the series will be

Answer 1

Answer:

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Answer 2

Answer:

Unchanged

Step-by-step explanation:

If a constant, k, is added to each number in a set of data, the mean will be increased by k and the standard deviation will be unaltered (since the spread of the data will be unchanged).

Hence, S.D. of the new data = 6