In mathematics, if every data value in a sample is multiplied by 3, how does the sample standard deviation change?
Answer and explanation
Correct answer: B. It is multiplied by 3
- Step 1: Scaling all data points by constant scales the standard deviation by (variance is multiplied by ). Answer: It is multiplied by 3. Why not the others: the other options result from algebraic, calculation, or formula application errors.
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