Distribution Shading - Texas Instruments TI-82 STATS Manual Book

Distribution Shading

DISTR DRAW
Menu
ShadeNorm(
To display the
DISTR DRAW
instructions draw various types of density
DISTR DRAW
functions, shade the area specified by lowerbound and
upperbound, and display the computed area value.
To clear the drawings, select
(Chapter 8).
Note: Before you execute a
the window variables so that the desired distribution fits the screen.
DISTR DRA
W
Shades normal distribution.
1: ShadeNorm(
Shades Student-t distribution.
2: Shade_t(
2 Shades c
3: Shadec (
Shades Û distribution.
4: ShadeÛ Û Û Û (
Note: L1å99 and 1å99 specify infinity. If you want to view the area left
of upperbound, for example, specify lowerbound=L1å99.
draws the normal density function specified by
ShadeNorm(
mean and standard deviation
m
lowerbound and upperbound. The defaults are
lowerbound
ShadeNorm(
Inferential Statistics and Distributions 13–35
menu, press y [
from the
1:ClrDraw
DISTR DRAW
instruction, you must set
2 distribution.
and shades the area between
s
upperbound[ s ]
, , m , )
Note: For this example,
Xmin = 55
Xmax = 72
Ymin = L.05
Ymax = .2
] ~ .
DISTR
menu
DRAW
=0 and =1.
m s