Casio ClassPad 330 - Page 432

20060301
F =
x
1 n–1
2
σ
x
2 n–1
2
σ
7-9-14
Tests
Calculation Result Output
χ
2
:
χ
2
value
p
:
p
-value
df
: degrees of freedom
Example
a
=
11 68 3
9 23 5
• Statistics Wizard Operation
(1)
J
(2) Input the matrix and assign it to variable
a
.
(3)
m
I
(4) On the menu bar, tap [Calc] and then [Test].
(5) Select [
χ
2
Test] and then tap [Next >>].
(6) Input matrix a in the Matrix dialog box.
(7) Tap [Next >>].
(8) To display the graph, tap
$
.
u
Program, eActivity or Main Application
Command: ChiTest

Command Syntax
Observed matrix
Input Example:
ChiTest matrixa
Tip
• The minimum size of the matrix is 1
×
2. An error occurs if the matrix has only one row.
• The result of the expected frequency calculation is stored in the system variable named “Expected”.
k
2-Sample
F
Test
2-Sample
F
Test
Menu: [Test]-[Two-Sample FTest]
Description: This command tests hypotheses concerning the ratio of the population
variance of two populations. A 2-Sample
F
Test uses
F
distribution.