What is the value of Σ(X + 1) for the scores 2, 4, 7?

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Multiple Choice

What is the value of Σ(X + 1) for the scores 2, 4, 7?

Explanation:
Adding a constant to each term inside a sum distributes across the sum. So you can sum each (X+1) individually: (2+1) + (4+1) + (7+1) = 3 + 5 + 8 = 16. Equivalently, Σ(X+1) = ΣX + n, where ΣX is 2+4+7 = 13 and n is the number of terms (3), giving 13 + 3 = 16. The value is 16.

Adding a constant to each term inside a sum distributes across the sum. So you can sum each (X+1) individually: (2+1) + (4+1) + (7+1) = 3 + 5 + 8 = 16. Equivalently, Σ(X+1) = ΣX + n, where ΣX is 2+4+7 = 13 and n is the number of terms (3), giving 13 + 3 = 16. The value is 16.

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