AP EAMCET · Maths · Statistics
If each of the observations \(x_1, x_2, \ldots, x_n\) is increased or decreased by \(k\), where \(k\) is a positive number, then the variance of the da
- A increases by \(\mathrm{k}\)
- B do not change
- C is equal to \(\mathrm{k}^2\)
- D is equal to \(2 \mathrm{k}\)
Answer & Solution
Correct Answer
(B) do not change
Step-by-step Solution
Detailed explanation
If each of the observations \(x_1, x_2, \ldots x_n\) is increased or decreased by \(k\) then mean and variance of the obtained data remains unchanged.
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