Mathematics

Mathematics

Problem

For the numbers 2, 4 and 6, what is the population standard deviation (correct to two decimal places)? a) 2.672.67 b) 1.631.63 c) 4.004.00 d) 2.002.00
Intuitive explanation

Standard deviation measures how spread out numbers are from their average. Start by finding the mean of 2, 4, and 6, then calculate how far each number deviates from that mean. Square those deviations, average them (this is the key step for population variance), and take the square root to get back to the original units.

Intuitive explanation

Standard deviation measures how spread out numbers are from their average. Start by finding the mean of 2, 4, and 6, then calculate how far each number deviates from that mean. Square those deviations, average them (this is the key step for population variance), and take the square root to get back to the original units.

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