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Question 18 A recent study on the relationship between the number of corgis a person owns and their level of happiness found a correlation coefficient of 0.626. Approximately what percent of variation in happiness cannot be explained by the number of corgis a person o wns? 60.8% 37.4%. 14.0%. 39.2% A B. C. D.
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Answer #1

Correlation Coefficient r = 0.626

Coefficient of Determination R2 = r2 = ( 0.626 )2 = 0.392

The Percentage of variation explained by the number of corgis a person owns is 0.392 * 100 = 39.2%

The Percentage of variation unexplained by the number of corgis a person owns is ( 1 - 0.392 ) * 100 = 60.8%

Option D is correct.

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