Find the variance of the first 5 natural numbers (1, 2, 3, 4, 5).

Topic: Statistics
Subtopic: Variance

A1.5

B2.0

C2.5

D3.0

Explanation

Mean = (1+2+3+4+5)/5 = 3. Squared deviations: (1-3)^2=4, (2-3)^2=1, (3-3)^2=0, (4-3)^2=1, (5-3)^2=4. Sum = 10. Variance = 10 / 5 = 2.0.

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