Texas Instruments TI-86 - Manual (Page 203)

Chapter 14: Statistics
191
14STATS.DOC TI-86, Chap 14, US English Bob Fedorisko Revised: 02/13/01 2:33 PM Printed: 02/13/01 3:04 PM Page 191 of 14 14STATS.DOC TI-86, Chap 14, US English Bob Fedorisko Revised: 02/13/01 2:33 PM Printed: 02/13/01 3:04 PM Page 191 of 14
For OneVa , the syntax is:
OneVar ãxList , frequencyList ä
For TwoVa , the syntax is:
TwoVar ã xLlist , yList , frequencyList ä
For LinR , LnR , ExpR , PwrR , P2Reg , P3Reg , and P4Reg , the syntax is:
TwoVar ãxList , yList , frequencyList ä
For SinR , the syntax is:
SinR ãiterations , xList , yList , period , equationVariable ä
iterations is the number of iterations to go through; higher values for iterations produce a
better fit, but take longer to calculate. period is an initial guess at which to begin calculation.
For LgstR , the syntax is:
LgstR ãiterations , xList , yList , frequencyList , equationVariable ä
To copy the contents RegEq to any variable after calculating the regression, the syntax is:
StReg( variable )
Automatic Regression Equation Storage
LinR , LnR , ExpR , PwrR , SinR , LgstR , P2Reg , P3Reg , and P4Reg are regression models. Each
regression model has an optional argument, equationVariable , for which you can specify an
equation variable, such as y1 . Upon execution, the regression equation is stored
automatically to the specified equation variable, and the function is selected.
Regardless of whether you specify equationVariable , the regression equation always is
stored to the result variable RegEq , which is an item on the STAT VARS menu. The
regression equation displays the actual result values.
When you select OneVa or
TwoVa
, the abbreviation
OneVar or TwoVar is
displayed.
For PwrR and ExpR, the
elements of
xList and yList
must be integers ‚ 1.
Default for iterations is 64.