TI -86 用户手册

20ATOZ.DOC   TI-86, Chap 20, US English   Bob Fedorisko   Revised: 02/13/01 2:42 PM   Printed: 02/13/01 3:05 PM   Page 339 of 118

20ATOZ.DOC   TI-86, Chap 20, US English   Bob Fedorisko   Revised: 02/13/01 2:42 PM   Printed: 02/13/01 3:05 PM   Page 339 of 118

STAT CALC menu

Built-in equation variables
such as y1, r1, and xt1 are
case-sensitive. Do not use
Y1, R1, and XT1.

Fits a power regression model (y=ax

b

) to positive real

data pairs in xList and yList, using frequencies in
frequencyList

. The regression equation is stored to

, which must be a built-in equation

variable such as 

, 

, and 

.

Values used for xList, yList, and frequencyList are
stored automatically to built-in variables 

, 

,

and 

, respectively. The regression equation is

stored also to built-in equation variable 

.

Uses frequencies of 1.

Stores the regression equation to 

 only.

Uses frequencies of 1, and stores the regression
equation to 

 only.

In 

 graphing mode:

Uses 

, 

, and 

 for xList, yList, and

, respectively. These built-in variables

must contain valid data of the same dimension;
otherwise, an error occurs. The regression equation is
stored to equationVariable and 

.