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What is the variance of the numbers: 5, 5, 5, 5? (2023)
Practice Questions
Q1
What is the variance of the numbers: 5, 5, 5, 5? (2023)
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Questions & Step-by-Step Solutions
What is the variance of the numbers: 5, 5, 5, 5? (2023)
Steps
Concepts
Step 1: List the numbers you have: 5, 5, 5, 5.
Step 2: Find the average (mean) of these numbers. Since all numbers are the same, the average is 5.
Step 3: Subtract the average from each number: 5 - 5 = 0 for each number.
Step 4: Square each of these results: 0^2 = 0 for each number.
Step 5: Find the average of these squared results. Since all are 0, the average is 0.
Step 6: The variance is the average of the squared differences, which is 0.
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