Chapter 04 Topic 13 Quiz | The Variance

Chapter 04 Topic 13 Quiz | The Variance

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Question 1 of 4

1. Question
What does the variance measure in a data set?
- a) The average value
- b) The range of values
- c) The difference between the highest and lowest values
- d) The degree to which each data point differs from the average
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Question 2 of 4

2. Question
Why is variance considered a better measure of variation than the range?
- a) It only considers the highest and lowest values
- b) It takes into account every single data point
- c) It always equals zero
- d) It is easier to calculate
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Question 3 of 4

3. Question
What does a variance of zero indicate?
- a) There is a lot of variation in the data set
- b) There is no variation in the data set
- c) The data set is invalid
- d) The data set has fewer data points
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Question 4 of 4

4. Question
Why do we square the deviations when calculating variance?
- a) To make the calculations easier
- b) To ensure the positive and negative deviations do not cancel
- c) To make the variance equal zero
- d) To reduce the variation in the data set
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