Example Inputs Put x and y values in two lists, as usual. Recall: STAT, TESTS, ALPHA F on 84, E on 83 VARS, Y-VARS, 1, 1 to get The Y 1 into the RegEQ
Example Outputs Do we have a significant linear relationship here? Compare the p-Value to the Level Of Significance α=0.05 If significant, then y = a + bx with these values of a and b is the “Line Of Best Fit”, but you do NOT have to retype them, see next screen! r and r 2 are here as usual.
Example Outputs Because you told LinRegTTest “RegEQ: Y1”, the y = a + bx is assembled for you in the Y= screen as equation Y 1. AWESOME!AWESOME!
Example Outputs You can then set up a STAT PLOT to do the scatter plot. ZOOM 9:ZoomStat plots both the scatter plot and the Line of Best Fit together.
Excel – Data tab, Data Analysis add-in, Regression
Excel > Data > Data Analysis > Regression A lot of choices to make:
Excel Regression tool with class size and test score example *
Some familiar things in the output (yellow) But you have to know where to find them A lot of new and different advanced stuff Some of it’s discussed in Lessons 12.3 and 12.4 Some of it’s from advanced courses.