Distribution Functions - Texas Instruments TI-82 STATS Manual Book

Distribution Functions

DISTR menu
normalpdf(
To display the
DISTR
DISTR DRAW
1: normalpdf(
2: normalcdf(
3: invNorm(
4: tpdf(
5: tcdf(
2
6: c pdf(
2
7: c cdf
8: Üpdf(
9: Ücdf(
0: binompdf(
A: binomcdf(
B: poissonpdf(
C: poissoncdf(
D: geometpdf(
E: geometcdf(
Note: L1å99 and 1å99 specify infinity. If you want to view the area left
of upperbound, for example, specify lowerbound=L1å99.
computes the probability density function (pdf) for
norwmalpdf(
the normal distribution at a specified x value. The defaults are
mean =0 and standard deviation
m
distribution, paste
normalpdf(
density function (pdf) is:
(
1
f x ( ) e
2
x[
normalpdf( , m , s] )
Tip: For plotting the normal distribution, you can set window variables
Xmin Xmax
and so that the mean m falls between them, and then
0:ZoomFit
select from the
Inferential Statistics and Distributions 13–29
menu, press y [
Normal probability density
Normal distribution probability
Inverse cumulative normal distribution
Student-t probability density
Student-t distribution probability
Chi-square probability density
Chi-square distribution probability
Û probability density
Û distribution probability
Binomial probability
Binomial cumulative density
Poisson probability
Poisson cumulative density
Geometric probability
Geometric cumulative density
=1. To plot the normal
s
to the
Y=
2
x )
2 2
, 0
Note: For this example,
Xmin = 28
Xmax = 42
Ymin = 0
Ymax = .25
ZOOM
menu.
].
DISTR
editor. The probability