Question: If the variance of a population is 25, what is the standard deviation? (2022)
Options:
5
10
15
20
Correct Answer: 5
Exam Year: 2022
Solution:
Standard deviation = √25 = 5.
If the variance of a population is 25, what is the standard deviation? (2022)
Practice Questions
Q1
If the variance of a population is 25, what is the standard deviation? (2022)
5
10
15
20
Questions & Step-by-Step Solutions
If the variance of a population is 25, what is the standard deviation? (2022)
Step 1: Understand that variance is a measure of how much the values in a population differ from the mean.
Step 2: Know that the standard deviation is the square root of the variance.
Step 3: Since the variance given is 25, we need to find the square root of 25.
Step 4: Calculate the square root of 25, which is 5.
Step 5: Conclude that the standard deviation is 5.
Variance and Standard Deviation – Variance is the average of the squared differences from the mean, and the standard deviation is the square root of the variance.
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