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The standard deviation of a data set is 5. What is the variance? (2023)

Practice Questions

Q1
The standard deviation of a data set is 5. What is the variance? (2023)
  1. 20
  2. 25
  3. 30
  4. 35

Questions & Step-by-Step Solutions

The standard deviation of a data set is 5. What is the variance? (2023)
  • Step 1: Understand that standard deviation is a measure of how spread out the numbers in a data set are.
  • Step 2: Know that variance is another measure of spread, and it is calculated by squaring the standard deviation.
  • Step 3: Since the standard deviation given is 5, we need to square this number.
  • Step 4: Calculate 5 squared, which is 5 * 5.
  • Step 5: The result of 5 * 5 is 25, which is the variance.
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