What is the value of Σ(X − 2) for the scores 2, 3, 5?

Study for the Psychology Statistics Test. Engage with interactive quizzes and detailed explanations. Equip yourself with the skills and confidence to succeed!

Multiple Choice

What is the value of Σ(X − 2) for the scores 2, 3, 5?

Explanation:
You're summing the values after subtracting 2 from each score. Subtracting 2 from 2, 3, and 5 gives 0, 1, and 3. Adding those together: 0 + 1 + 3 = 4. You can also see this with the summation rule: Σ(X − 2) = ΣX − 2n. Here ΣX = 2 + 3 + 5 = 10 and n = 3, so 10 − 2×3 = 4. So the total is 4.

You're summing the values after subtracting 2 from each score. Subtracting 2 from 2, 3, and 5 gives 0, 1, and 3. Adding those together: 0 + 1 + 3 = 4. You can also see this with the summation rule: Σ(X − 2) = ΣX − 2n. Here ΣX = 2 + 3 + 5 = 10 and n = 3, so 10 − 2×3 = 4. So the total is 4.

More Multiple Choice Questions
Subscribe

Get the latest from Passetra

You can unsubscribe at any time. Read our privacy policy