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20060301
7-9-15
Tests
Definition of Terms
σ
1
condition: population standard deviation test conditions (“
≠
” specifies two-
tail test, “<” specifies one-tail test where sample 1 is smaller than
sample 2, “>” specifies one-tail test where sample 1 is greater than
sample 2.)
List(1) : list where sample 1 data is located
List(2) : list where sample 2 data is located
Freq(1) : frequency of sample 1 (1 or list name)
Freq(2) : frequency of sample 2 (1 or list name)
x
1
σ
n
−1
: sample standard deviation of sample 1 (
x
1
σ
n
−1
> 0)
n
1
: size of sample 1 (positive integer)
x
2
σ
n
−1
: sample standard deviation of sample 2 (
x
2
σ
n
−1
> 0)
n
2
: size of sample 2 (positive integer)
Calculation Result Output
σ
1
≠
σ
2
: test condition
F
:
F
value
p
:
p
-value
o
1
: sample mean of sample 1 data (Displayed only for list format.)
o
2
: sample mean of sample 2 data (Displayed only for list format.)
x
1
σ
n
–1
: sample standard deviation of sample 1
x
2
σ
n
–1
: sample standard deviation of sample 2
n
1
: size of sample 1
n
2
: size of sample 2
Example
list1 : { 7, −4, 18, 17, −3, −5, 1, 10, 11, −2, −3 }
list2 : { −1, 12, −1, −3, −3, 3, −5, 5, 2, −11, −1, −3 }
• 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 FTest] and [List], and then tap
[Next >>].
(4) Select the
σ
1
conditon [
≠
].
(5) Select List(1) [list1], List(2) [list2], Freq(1) [1] and
Freq(2) [1].
(6) Tap [Next >>].
(7) To display the graph, tap
$
.
u
Program, eActivity or Main Application
Command: TwoSampleFTest
Command Syntax
Syntax 1 (list format)
“
σ
1
condition”, List(1), List(2), Freq(1) (or 1), Freq(2) (or 1)
* “Freq” can be omitted. Doing so sets “1” for “Freq”.
Syntax 2 (parameter format)
“
σ
1
condition”,
x
1
σ
n
–1
value,
n
1
value,
x
2
σ
n
–1
value,
n
2
value
20070301