OpenStax, Introductory Business Statistics 2e §13.1 The Correlation Coefficient r · Exercise 3 · Statistics · Regression & correlation
The Correlation Coefficient r · Exercise 3
If the correlation between age of an auto and money spent for repairs is +.90
(a) 81% of the variation in the money spent for repairs is explained by the age of the auto
(b) 81% of money spent for repairs is unexplained by the age of the auto
(c) 90% of the money spent for repairs is explained by the age of the auto
(d) none of the above
OpenStax, Introductory Business Statistics 2e · §13.1 The Correlation Coefficient r · Exercise 3
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