PRC-2 · Chapter 8 · Question 59 of 60
If all values sampled in a dataset are perfectly identical (e.g., 10, 10, 10, 10), what is the mathematical value of the variance?
Test yourself: pick an answer
Reveal answer & explanation
Correct answer: A) Exactly zero
Explanation
Variance mathematically measures the dispersion or spread of data points away from the mean. If every single observation is completely identical, there is zero spread, meaning variance strictly equals zero.
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