Allied & ICAR Exam Bank • ALLIED_2732 NAT • 2 Marks

Section 1: Engineering Mathematics

Probability and Statistics

Subtopic: Mean, median, mode and standard deviation

Question Statement:

If a random variable has variance $\sigma^2 = 16$, the standard deviation is:

Answer Key:

4

Step-by-Step Solution & Explanation

Standard deviation is $\sqrt{\sigma^2} = \sqrt{16} = 4$.
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