Given that the sum of squares for error is 60 and the sum of squares for regression is 140,then the coefficient of determination is:
A)0.429
B)0.300
C)0.700
D)None of these choices.

Question

Quizplus · Accepted Answer

The coefficient of determination (R-squared) is the ratio of the sum of squares for regression to the total sum of squares (sum of squares for regression + sum of squares for error).
Total sum of squares = sum of squares for regression + sum of squares for error = 140 + 60 = 200
Therefore, R-squared = 140/200 = 0.7.
Hence, the answer is C.

Given That the Sum of Squares for Error Is 60