Business Statistics
If the total variation in y values is 200, and the variation explained by regression line is 180, then the coefficient of determination is equal to __________.
A) 1.11
B) 0.90
C) 0.81
D) 1.21
I picked D 1.21
asked by
Stuart

I'll give you a hint:
Coefficient of Determination is explained variation divided by total variation (which is the correlation coefficient squared).
I'll let you take it from there.
posted by MathGuru

Thanks again MathGuru
posted by Stuart
Respond to this Question
Similar Questions

STATISTICS
A) If a regression experiment has correlation coefficient r= 0.75, what precent of total variation is explained by the regression? B) if 85% of total variation is explained by the regression, and there is an inverse relationship 
stats
Find the explained variation for the paired data. The equation of the regression line for the paired data below is yhat = 3x. Find the explained variation. x= 2 4 5 6 y= 7 11 13 20 
statistics
Pre study scores versus post study scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least squares regression line was 
research evaul 342
If the coefficient of correlation is –0.81, then the percentage of the variation in y that is explained by the regression line is 81%. A. True B. False 
Statistics
Using advertised prices for used Ford Escorts a linear model for the relationship between a car's age and its price is found. The correlation coefficient is  0.933 Determine R2 and interpret this statistic. A) R2 = 93.3% which 
statistics
Pre study scores versus poststudy scores for a class of 120 college freshman english students were considerated. The residual plot for the least squares regression line showed no pattern. The least square regression line was y = 
Statistics
Using advertised prices for used Ford Escorts a linear model for the relationship between a car's age and its price is found. The correlation coefficient is  0.933 Determine R2 and interpret this statistic. A) R2 = 93.3% which 
Math
A perfect positive or negative correlation means that A) the explanatory causes the yvariable. B) 100% of the variation is explained. C) we get the same regression equation if we switch the x and y variables. D) the slope of the 
Algebra worksheet
Hello. My algebra teacher gave me this worksheet last week and everyone had to bring it yesterday and I haven't done it yet. Can someone please help me. He said Friday is the last day or he's going to take away some points. I've 
math
Is the relationship between the variables in the table direct variation, inverse variation, both, or neither? If it is a direct or inverse variation, write a function to follow it. X:2 5 20 40 Y:40 20 5 2 ANSWERS AVAILABLE TO