Texas Instruments TI-84 PLUS - Graphing Calculator User Manual

Chapter 13: Inferential Statistics and Distributions 233
c
2
-Test
c
2
-Test (chi-square test; item C) computes a chi-square test for association on the two-way table of
counts in the specified
Observed matrix. The null hypothesis H
0
for a two-way table is: no
association exists between row variables and column variables. The alternative hypothesis is: the
variables are related.
Before computing a c
2
-Test, enter the observed counts in a matrix. Enter that matrix variable
name at the
Observed: prompt in the c
2
.Test editor; default=[A]. At the Expected: prompt, enter the
matrix variable name to which you want the computed expected counts to be stored; default=
[B].
Matrix
editor:
Note: Press
y ú ~ ~ 1 to
select 1:[A] from the MATRX EDIT
menu.
Input:
Note: Press
y ú †] Í to
display matrix [B].
Calculated
results:
Drawn results:

Texas Instruments TI-84 PLUS - Graphing Calculator Specifications

General

Type	Graphing Calculator
Display Type	LCD
Screen Resolution	96 x 64 pixels
Processor	Zilog Z80
Memory	24 KB RAM, 480 KB Flash ROM
Power Source	4 AAA batteries (with backup lithium battery)
Connectivity	I/O port
Weight	7.4 oz (210 g)
Software	TI-OS (Texas Instruments Operating System)