How variance is effected when a constant is subtracted or added to eve

1.	How variance is effected when a constant is subtracted or added to every value of variable?
Answer» Step-by-step EXPLANATION: Adding a constant value, c, to a RANDOM variable does not CHANGE the VARIANCE, because the expectation (mean) increases by the same amount. ... Multiplying a random variable by a constant increases the variance by the square of the constant.

How variance is effected when a constant is subtracted or added to every value of variable?

Answer»

Step-by-step EXPLANATION:

Adding a constant value, c, to a RANDOM variable does not CHANGE the VARIANCE, because the expectation (mean) increases by the same amount. ... Multiplying a random variable by a constant increases the variance by the square of the constant.

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How variance is effected when a constant is subtracted or added to every value of variable?​

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How variance is effected when a constant is subtracted or added to every value of variable?