Automatic regression equation – Texas Instruments TI-83 PLUS User Manual

Page 356

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TI-83 Plus

Statistics

353

Automatic Regression Equation

Each regression model has an optional argument,

regequ

, for which you

can specify a

Y=

variable such as

Y

1

. Upon execution, the regression

equation is stored automatically to the specified

Y=

variable and the

Y=

function is selected.

Regardless of whether you specify a

Y=

variable for

regequ

, the

regression equation always is stored to the

TI-83 Plus

variable

RegEQ

,

which is item

1

on the

VARS Statistics EQ

secondary menu.

Note: For the regression equation, you can use the fixed-decimal mode setting
to control the number of digits stored after the decimal point (Chapter 1).
However, limiting the number of digits to a small number could affect the
accuracy of the fit.

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