Key | Meaning (Continued) |
|
|
| Displays ZOOM menu. |
| Turns trace mode on/off. The white |
| box appears next to the option when |
| Trace mode is active. |
| Turns fit mode on or off. Turning |
| on draws a curve to fit the data points |
| according to the current regression |
| model. |
(2var | Enables you to specify a value on the |
statistics only) | line of best fit to jump to or a data |
| point number to jump to. |
| Displays the equation of the |
| regression curve. |
| Hides and displays the menu key |
| labels. When the labels are hidden, |
| any menu key displays the (x,y) |
| coordinates. Pressing |
| redisplays the menu labels. |
|
|
Find predicted values
The functions PREDX and PREDY estimate (predict) values for X or Y given a hypothetical value for the other. The estimation is made based on the curve that has been calculated to fit the data according to the specified fit.
1.In Plot view, draw the regression curve for the data set.
2.Press 
to move to the regression curve.
3.Press 
and enter the value of X. The cursor jumps to the specified point on the curve and the coordinate display shows X and the predicted value of Y.
In HOME:
•Enter 
to find the predicted value for the independent variable given a hypothetical dependent value.
Statistics aplet |