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20060301
7-9-11
Tests
Calculation Result Output
μ
1
≠
μ
2
: test condition
t
:
t
value
p
:
p
-value
df
: degrees of freedom
o
1
: sample mean of sample 1 data
o
2
: sample mean of sample 2 data
x
1
σ
n
–1
: sample standard deviation of sample 1
x
2
σ
n
–1
: sample standard deviation of sample 2
x
p
σ
n
–1
: Pooled sample standard deviation (Displayed only when pooling is
turned on.)
n
1
: size of sample 1
n
2
: size of sample 2
Example
list1 : {−8522, 316, −9001, 6470, 8956, 4348, 8571,
2142, −7139, 9925, 1260}
list2 : {176, 5498, 4830, 9457, 6486, 9607, −8334,
−1771, 7919, −2997}
• 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 [Two-Sample TTest] and [List], and then tap
[Next >>].
(4) Select the
μ
1
condition [<].
(5) Select List(1) [list1], List(2) [list2], Freq(1) [1],
Freq(2) [1] and Pooled [Off].
(6) Tap [Next >>].
(7) To display the graph, tap the
$
.
u
Program, eActivity or Main Application
Command: TwoSampleTTest
Command Syntax
Syntax 1 (list format)
“
μ
1
condition”, List(1), List(2), Freq(1) (or 1), Freq(2) (or 1), Pooled condition (On
or Off)
* “Freq” can be omitted. Doing so sets “1” for “Freq”.
* “Pooled” can be omitted. Doing so sets “Off” for “Pooled”.
Syntax 2 (parameter format)
“
μ
1
condition”,
o
1
value,
x
1
σ
n
−1
value,
n
1
value,
o
2
value,
x
2
σ
n
−1
value,
n
2
value,
Pooled condition (On or Off)
* “Pooled” can be omitted. Doing so sets “Off” for “Pooled”.
20070301