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Shadenorm – Texas Instruments TI-84 User Manual

Page 386

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Chapter 13: Inferential Statistics and Distributions

383

To clear the drawings, select

1:ClrDraw

from the

DRAW

menu (Chapter 8).

Note:

Before you execute a

DISTR DRAW

instruction, you must set the window variables

so that the desired distribution fits the screen.

Note:

L1â99 and 1â99 specify infinity. If you want to view the area left of

upperbound

, for

example, specify

lowerbound

=

L1â99.

ShadeNorm(

ShadeNorm(

ShadeNorm(

ShadeNorm(

ShadeNorm(

draws the normal density function specified by mean

m and standard

deviation

s and shades the area between

lowerbound

and

upperbound

. The defaults are

m=0

and

s=1.

DISTR DRAW

1:

ShadeNorm(

Shades normal distribution.

2:

Shade_t(

Shades Student-t distribution.

3:

Shade

c

2

(

Shades

c

2

distribution.

4:

Shade

Ü(

Shades

Ü

distribution.