After taking an300, c& a decides to use excel to perform a linear regression forecast on the sales of hdtv and obtains the following summary output of the regression analysis. what conclusions can be drawn?
regression statistics
multiple r
0.13
r square
0.02
adjusted r square
-0.18
standard error
3.18
observations
7
linear regression is a good forecast method because the correlation coefficient is 0.13.
linear regression is a good forecast method because the correlation coefficient is 0.02.
linear regression is a not good forecast method because the correlation coefficient is 0.13.
linear regression is a not good forecast method because the correlation coefficient is -0.18.
linear regression is not a good forecast method because the correlation coefficient is 0.02.