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:
You’re looking at the square of the sum of the scores. First add them: 1 + 5 + 2 = 8. Then square that total: 8 × 8 = 64. So the value is 64. If you were asked for the sum of the squares, you’d get 1^2 + 5^2 + 2^2 = 30, which is a different calculation.

You’re looking at the square of the sum of the scores. First add them: 1 + 5 + 2 = 8. Then square that total: 8 × 8 = 64. So the value is 64. If you were asked for the sum of the squares, you’d get 1^2 + 5^2 + 2^2 = 30, which is a different calculation.

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