## Median-Median Line

The median-median line option finds the median-median line of the form
y = ax + b using the given data points. First, enter
the data. Press .

Press
and use
to select CALC.

Press .
(The median-median line option can also be obtained by using the
to select option 3 and pressing )
then press .

Therefore, the equation of the median-median line for this data is y
= 15.2x - 24.03.
The TI-83 stores the regression equation. The equation can be graphed
and is transfered to
without typing the equation as follows. Press
and use
to select EQ.

Press
to view the regression equation and press .
The equation is now entered in .
Press .
The data points can also be viewed. Access STAT PLOTS by pressing
to turn the plots on. Press .