Texas Instruments TI-83

13-36 Inferential Statistics and Distributions

8313INFE.DOC TI-83 international English Bob Fedorisko Revised: 02/19/01 12:47 PM Printed: 02/19/01 1:38 PM

Page 36 of 36

Shade_t( draws the density function for the Student-t

distribution specified by df (degrees of freedom) and

shades the area between lowerbound and upperbound.

Shade_t(lowerbound,upperbound,df)

Note: For this example,

Xmin = L3

Xmax = 3

Ymin = L.15

Ymax = .5

Shadec2( draws the density function for the c2 (chi-square)

distribution specified by df (degrees of freedom) and shades

the area between lowerbound and upperbound.

Shadec2(lowerbound,upperbound,df)

Note: For this example,

Xmin = 0

Xmax = 35

Ymin = L.025

Ymax = .1

ShadeÜ( draws the density function for the Û distribution

specified by numerator df (degrees of freedom) and

denominator df and shades the area between lowerbound

and upperbound.

ShadeÜ(lowerbound,upperbound,numerator df,

denominator df)

Note: For this example,

Xmin = 0

Xmax = 5

Ymin = L.25

Ymax = .9

Shade_t(

Shade

ShadeÜ(