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