$$\text { For random variables } x \text { and } y \text {, if } y = a + b x \text {, then } \sigma _ { y } = a + b \sigma _ { x }$$

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The Answer of $$\text { For random variables } x \text { and } y \text {, if } y = a + b x \text {, then } \sigma _ { y } = a + b \sigma _ { x }$$

$\text { For random variables } x \text { and } y \text {, if } y = a + b x \text {, then } \sigma _ { y } = a + b \sigma _ { x }$