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12 questions from this quiz
To simplify calculations with large numbers
The original data value
To shift the data
To scale the data
It doesn't change the shape
xˉ=byˉ+a\bar{x} = b\bar{y} + axˉ=byˉ+a
yˉ=xˉ−ab\bar{y} = \frac{\bar{x} - a}{b}yˉ=bxˉ−a
Var(x)=b2×Var(y)\text{Var}(x) = b^2 \times \text{Var}(y)Var(x)=b2×Var(y)
SD(x)=b×SD(y)\text{SD}(x) = b \times \text{SD}(y)SD(x)=b×SD(y)
Only bbb
60
With large numbers or awkward decimals
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