Business Statistics

Chapter 14 | Simple Linear Regression Analysis 499

(1) Develop a regression model to predict leaves based on train-

ing days.

 (2) Calculatethecoefcientofdeterminationandstateitsinter-

pretation.

(3) Calculate the standard error of the estimate.

(4) Predict the leaves when training days are 25.

(5) t Test for the slope of the regression line

(6) Test the overall model

 (7) Statistical inference about the correlation coefcient of the

regression model

(8) Calculate Durbin–Watson statistic and interpret it.

formUlaS |

Equation of the simple regression line

0 1

ˆ

y b b x= +

Slope of a regression line

( ) ( )

(