The coefficient of determination is 0.234 ​ ​Therefore, about _________% of the variation in monthly sales is explained by the years of sales experience.   ​(Type an integer or decimal rounded to one decimal place as​ needed.)

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 8E
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A car dealership would like to develop a regression model that would predict the number of cars sold per month by a dealership employee based on the​employee's number of years of sales experience. The accompanying regression output was developed based on a random sample of employees.

 

a. Predict the sales next month for an employee with 2.5 years of experience.
 
The predicted sales is
8.6 cars.
 
b. Compute the coefficient of determination and interpret its meaning.
 
The coefficient of determination is
0.234
​Therefore, about _________% of the variation in monthly sales is explained by the years of sales experience.
 
​(Type an integer or decimal rounded to one decimal place as​ needed.)
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