2-Sample F Test - Casio fx-9860G Series User Manual

k 2-Sample F Test
F
2-Sample Test tests the hypothesis for the ratio of sample variances. The
F
to the distribution.
F = F =
Perform the following key operations from the statistical data list.
3(TEST)
4(F)
The following is the meaning of each item in the case of list data specifi cation.
Data.............................. data type
σ
................................. population standard deviation test conditions ("
1
List(1) ........................... list whose contents you want to use as data of sample 1
List(2) ........................... list whose contents you want to use as data of sample 2
Freq(1).......................... frequency of sample 1 (1 or List 1 to 26)
Freq(2).......................... frequency of sample 2 (1 or List 1 to 26)
Save Res ...................... list for storage of calculation results (None or List 1 to 26)
Execute ........................ executes a calculation or draws a graph
The following shows the meaning of parameter data specifi cation items that are different
from list data specifi cation.
σ
x
............................ standard deviation (
n
1 -1
n
................................. size (positive integer) of sample 1
1
σ
x
............................ standard deviation (
n
2 -1
n
................................. size (positive integer) of sample 2
2
6-5-20
Tests
σ σ
x x
2 2
1 n–1 1 n–1
σ σ
x x
2 2
2 n–1 2 n–1
specifi es two-tail test, "< σ
sample 1 is smaller than sample 2, "> σ
test where sample 1 is greater than sample 2.)
(List 1 to 26)
(List 1 to 26)
20070201
" specifi es one-tail test where
2
" specifi es one-tail
2
σ
x
> 0) of sample 1
n
1 -1
σ
x
> 0) of sample 2
n
2 -1
F
Test is applied
σ
"
2