We recorded the pre-statistics course grade (in percent)--------- and introductory statistics course grade ---------(in percent) for 60 community college students. ---------Then we generated the following scatterplot of the data.-----------

For this linear regression model, r2= 0.70. What does this mean?

????About 30% of the total variation in the introductory statistics course grade is to due variable(s) other than the pre-statistics course grade.???

????The pre-statistics course grade explains 70% of the introductory statistics course grade.?????????

????The introductory statistics grade explains 70% of the total variation in the pre-statistics course.??????

????The pre-statistics course grade explains 70% of the total variation in the introductory statistics course grade.????????

?????About 70% of the data is along the regression line.?????