The following data, with the corresponding Excel scatterplot, show the average growth rate of Weeping Higan cherry trees planted in Washington, DC. At the time of planting, the trees were one year old and were all six feet in height. What percent of the variation in heights is explained by the model? ________.
A) 6.09
B) 6.10
C) 98.63
D) Can't determine from the given information

Question

The following data, with the corresponding Excel scatterplot, show the average growth rate of Weeping Higan cherry trees planted in Washington, DC. At the time of planting, the trees were one year old and were all six feet in height.   What percent of the variation in heights is explained by the model? ________.
A) 6.09 
B) 6.10 
C) 98.63 
D) Can't determine from the given information

Quizplus · Accepted Answer

The coefficient of determination (R-squared) is a measure of how well the regression line fits the data. It ranges from 0 to 1, with higher values indicating a better fit. In this case, the R-squared value is 0.9863, which means that 98.63% of the variation in heights is explained by the model. Therefore, the best choice is C.

The Following Data, with the Corresponding Excel Scatterplot, Show the Average