Texas Instruments TI-84 PLUS - Graphing Calculator User Manual

Chapter 13: Inferential Statistics and Distributions 234
c
2
GOF-Test
c
2
GOF-Test (Chi Square Goodness of Fit; item D) performs a test to confirm that sample data is
from a population that conforms to a specified distribution. For example, c
2
GOF can confirm that
the sample data came from a normal distribution.
In the example:
list 1={16, 25, 22, 8, 10}
list 2={16.2, 21.6, 16.2, 14.4, 12.6}
The Chi-square
Goodness of Fit
input screen:
Note: Press
… ~ ~ to
select TESTS. Press
†
several times to select
D:X
2
GOF-Test... Press
Í. To enter data for
df (degree of freedom),
press † † †. Type 4.
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)