The stat draw menu, Forecasting a statistical data value, The stat draw menu - š ) – Texas Instruments TI-86 User Manual

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Chapter 14: Statistics

199

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 199 of 14

middle. When three are plotted, the first one plots at the top, the second in the middle, and
the third at the bottom.

The STAT DRAW Menu

- š )

CALC

EDIT

PLOT

DRAW

VARS

HIST

SCAT

xyLINE

BOX

MBOX

DRREG CLDRW DrawF

STPIC

RCPIC

HIST

Draws a histogram of one-variable data

SCAT

Draws a scatter plot of the data points

xyLINE

Draws the data points and a line connecting each point to the next point

BOX

Draws a box plot of the data points

MBOX

Draws a modified box plot of the data points

DRREG

(draw regression equation) Draws the current regression equation

CLDRW

(clear drawings) Displays the current graph with no drawings

DrawF

expression (draw function) Plots expression as a drawing

STPIC

(store picture) Displays the picture variable

Name=

prompt; enter a valid variable

name, starting with a letter, and then press b to store the current picture

RCPIC

(recall picture) Displays the picture variable

Name=

prompt and menu; select or

enter a valid variable name, and then press b; the stored picture is redrawn

Forecasting a Statistical Data Value

Using the forecast editor, you can forecast an x-value or y-value based on the current
regression equation. To use the forecast editor, a regression equation must be stored to

RegEq

When you select any of the
first five STAT DRAW menu
items, the TI

86 plots the

data stored in the lists xStat
and yStat.