HP Prime Graphing Calculator - Manual (Page 242)

238 Statistics 2Var app
T i p In cases where more than one fit curve is displayed, the
PredX and PredY functions use the first active fit defined
in Symbolic view.
Troubleshooting a plot
If you have problems plotting, check the following:
• The fit (that is, regression model) that you intended to
select is the one selected.
• Only those data sets you want to analyze or plot are
selected in Symbolic view.
• The plotting range is suitable. Try pressing V and
selecting Autoscale, or adjust the plotting
parameters in Plot Setup view.
• Ensure that both paired columns contain data, and
are of the same length.