Texas TI-86 用户手册

200

Chapter 14: Statistics

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 200 of 14

� Enter stat data in the list editor. The screen to

the right shows all

fStat

elements as

, but you

need not enter them.

is the default for all

fStat

elements. However, if other elements are

stored to

fStat

, you must clear them.

- š '
`

# "

� Display the home screen.
� Execute a linear regression for

xStat

and

yStat

The statistical results are displayed.

� Remove the

STAT

CALC

menu to display all

results, including

- š &
( b
.

� Display the forecast editor. The current

regression model is displayed on the top line.

� Enter

x=3

, and then move the cursor to the

prompt.

/ &

� Select

SOLVE

from the forecast editor menu to

solve for

x=3

. A small square indicates the

solution. You can continue to use the forecast
editor with other values for

When you use

FCST

, the values of

, and

Ans

are not updated. To store the

value or

value, move the cursor onto the variable to be stored, press X, enter a valid variable

name at the

Sto

prompt, and then press b.

Values entered at forecast
editor prompts must be real
numbers or expressions that
evaluate to real numbers.

If the most recent calculation
was a polynomial regression,
you can only forecast the

value.