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Prediction Intervals

12. Regression / Prediction Intervals / Problem 3

Problem 3

Given x values: 2, 4, 6, 8, what is x̄ and Σx²?

A

x̄ = 4, Σx² = 100

B

x̄ = 5, Σx² = 100

C

x̄ = 5, Σx² = 120

D

x̄ = 4, Σx² = 120