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7-9-13
Tests
Example
list1 : { 38, 56, 59, 64, 74 }
list2 : { 41, 63, 70, 72, 84 }
• Statistics Wizard Operation
(1) Input the data into [list1] and [list2] in the Stat Editor.
(2) On the menu bar, tap [Calc] and then [Test].
(3) Select [Linear Reg TTest] and then tap [Next >>].
(4) Select the
ơ
&
ρ
condition [
≠
].
(5) Select XList [list1], YList [list2] and Freq [1].
(6) Tap [Next >>].
(7) To display the graph, tap
$
.
u
Program, eActivity or Main Application
Command: LinRegTTest
Ⅺ
Command Syntax
“
ơ
&
ρ
condition”, XList, YList, Freq (or 1)
* “Freq” can be omitted. Doing so sets “1” for “Freq”.
Input Example
LinRegTTest “
≠
”,list1,list2,1
k
χ
2
Test
χ
2
Test
Menu: [Test]-[
χ
2
Test]
Description: This command tests hypotheses concerning the proportion of samples
included in each of a number of independent groups. The
χ
2
Test command is
used in the case of dichotomous variables, which are variables that have only
two possible values (such as “yes” or “no”).
Expected Frequencies
F
ij
=
Σ
x
ij
i=1
k
×
Σ
x
ij
j=1
ΣΣ
i=1
k
j=1
x
ij
Definition of Terms
Observed matrix: name of matrix containing observed values (positive integers in
all cells for 2 × 2 and larger matrices; positive real numbers for
one row matrices)
χ
2
=
ΣΣ
F
ij
i=1
k
(xij – Fij)
2
j=1