Mathematics · Statistics - Variance and Standard Deviation
If the variance of a data set is 49, what is its standard deviation? If each observation is multiplied by 3, what will be the new variance?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Standard Deviation = 7, New Variance = 441✓
- 2Standard Deviation = 7, New Variance = 147
- 3Standard Deviation = 49, New Variance = 441
- 4Standard Deviation = 7, New Variance = 49
Correct answer
Standard Deviation = 7, New Variance = 441
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