Multiple choice general knowledge

Coefficient of Determination is

  1. Square of sample correlation coefficient

  2. Square root of sample correlation coefficient

  3. 2* sample correlation coefficient

  4. Sample correlation coefficient / 2
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Explanation

The coefficient of determination (R²) in regression analysis is the square of the correlation coefficient (r). If r = 0.8, then R² = 0.64, meaning 64% of variance is explained by the model.

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