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The standard deviation of a data is 3. If each value is multiplied by 5 then the new variance is ____

(1) 3

(2) 15

(3) 5

(4) 225

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(4) 225

Standard deviation = 3

Each value is multiplied by 5

New standard deviation = 3 x 5 = 15

New variance = 152 = 225

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