What is the value of (ΣX)² for the scores 1, 5, 2?

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Multiple Choice

What is the value of (ΣX)² for the scores 1, 5, 2?

Explanation:
The value tested is the square of the total sum. First add the scores: 1 + 5 + 2 = 8. Then square that result: 8^2 = 64. So (ΣX)² equals 64. It’s common to confuse this with ΣX², which would be 1^2 + 5^2 + 2^2 = 30, but that’s a different calculation.

The value tested is the square of the total sum. First add the scores: 1 + 5 + 2 = 8. Then square that result: 8^2 = 64. So (ΣX)² equals 64. It’s common to confuse this with ΣX², which would be 1^2 + 5^2 + 2^2 = 30, but that’s a different calculation.

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