If each of the observations $x_1, x_2, \ldots, x_n$ is increased or decreased by $k$, where $k$ is a…
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
- increases by $\mathrm{k}$
- do not change
- is equal to $\mathrm{k}^2$
- is equal to $2 \mathrm{k}$
Solution
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.
Asked in: AP EAMCET 2023 (17 May Shift 1)
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