The mean and standard deviation of six observations are 8 and 4

MATHEMATICS · Subjective · CBSE · Mathematics · Statistics · Statistics

Problem

3. The mean and standard deviation of six observations are 8 and 4 , respectively. If each observation is multiplied by 3 , find the new mean and new standard deviation of the resulting observations.

Related theory

Variance and Standard Deviation
Measures of Spread
Statistics

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