Texas Instruments TI-NSPIRE Software Manual page 260

Tool name
Remove Y Variable
Actions Tool menu
Tool name
Select all Points
Add Movable Line
Remove Selected
Lock Intercept at
Zero/Unlock Movable
Line Intercept
Regression
Show/Hide Linear
(mx+b)
Show/Hide Linear
(a+bx)
Show/Hide Median-
Median
Show/Hide Quadratic
248
Tool function
Toggles the display of the variable
assigned to the vertical axis without
changing the horizontal axis.
Tool function
Selects all points in the work area.
Adds a line you can position and
reposition in the work area. This can be
used for manual fit.
Removes the selected object. Changes to
Remove Movable Line, Remove
Regression, Remove Plotted Value,
Remove Plotted Function, depending on
what is selected.
Locks the intercept of the movable line at
zero. This tool is only available
Note:
when a movable line or regression line is
present in the work area.
The regression tools perform the selected
regression calculation and then plot the
regression model. Regressions are only
available on Scatter plots of X-Y line
plots.
Calculates and displays the linear
regression line in the format, mx+b, for
the plotted data.
Calculates and displays the linear
regression line in the format, a+bx, for
the plotted data.
Calculates and displays the Median-
Median regression line for the plotted
data.
Calculates and displays the Quadratic
regression model for the plotted data.
Using Data & Statistics