Question

A population of N = 50 scores, has µ = 14 and σ² = 9. What is the population standard deviation?

a. 4
b. 5.5
c. 3
d. None of the above

Answer 1

The population standard deviation is found by taking the square root of the variance. Given a variance of 9, the standard deviation is 3.

Step-by-step explanation:

The question is asking to find the population standard deviation given a population variance. In statistics, the variance (σ²) is the square of the standard deviation (σ), which is a measure of the spread of scores within a data set.

To find the standard deviation, we take the square root of the variance. Given that the variance (σ²) is 9, the population standard deviation (σ) would be √9. Therefore, the population standard deviation is 3.

Answer: The population standard deviation is c. 3.