Answer-first summary for fast verification
Answer: Variance is a measure of how far a set of values is spread out from the set's central value.
The correct answer is D because variance is defined as a measure of how far a set of values is spread out from the set's central value (typically the mean). Option A is incorrect because variance measures the spread of all values from the mean, not just a single observed value. Option B is wrong as variance is not about distance from the maximum or minimum value. Option C is incorrect because variance is a measure of dispersion, not central tendency (which includes mean, median, and mode). The community discussion shows 100% consensus on C, but this appears to be a misinterpretation or error in the discussion data, as the statistical definition clearly supports D as the correct answer.
Author: LeetQuiz Editorial Team
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What describes the variance of a set of values?
A
Variance is a measure of how far a single observed value is from a set of values.
B
Variance is a measure of how far an observed value is from the variable’s maximum or minimum value.
C
Variance is a measure of central tendency of a set of values.
D
Variance is a measure of how far a set of values is spread out from the set's central value.
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