Suppose the correlation coefficient describing how the heights of teenage boys predicts their weights is 0.85. What is the coefficient of determination (r2) and what does it mean in context? Group of answer choices r2 = 0.7225. 72.25% of the variation in heights of teenage boys can be explained by their weight. r2 = 0.7225. 72.25% of the variation in weights of teenage boys can be explained by their height. r2 = 0.85. 85% of the variation in heights of teenage boys can be explained by their weight. r2 = 0.85. 85% of the variation in weights of teenage boys can be explained by their height.
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The coefficient of determination is found by squaring the correlation coefficient (r). Given that the correlation coefficient (r) is 0.85, we calculate r² as follows: \[ r² = (0.85)² = 0.7225 \] Show more…
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