Casio CFX9850GBPLUS User Manual page 345

The following confi dence interval applies when pooling is not in effect.
signifi cance. The value 100 (1 – ) % is the confi dence level.
Left = (o Left = (o
Right = (o Right = (o
df = df =
C C
n n
1 1
C = C =
x x
1 1
n n
Perform the following key operations from the statistical data list.
4 (INTR)
2 (t)
2 (2-S)
The following shows the meaning of each item in the case of list data specifi cation.
Data ............................. data type
C-Level ........................ confi dence level (0 < C-Level < 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)
Pooled .......................... pooling On (in effect) or Off (not in effect)
Save Res ..................... list for storage of calculation results (None or List 1 to 26)
Execute ........................ executes a calculation
The following shows the meaning of parameter data specifi cation items that are different
from list data specifi cation.
6-6-10
Confi dence Interval
x x
– o – o 1 1
)– t )– t
n n
1 1 2 2 df df
2 2
x x
– o – o 1 1
)+ t )+ t
1 1 2 2 df df
2 2
1 1
2 2
(1–C ) (1–C )
2 2
+ +
–1 –1 n n –1 –1
2 2
x x
2 2
1 1 n–1 n–1
n n
1 1
x x
2 2 2 2
n–1 n–1 2 2 n–1 n–1
+ +
n n
1 1 2 2
(List 1 to 26)
(List 1 to 26)
20070201
x x
2 2 2 2
2 2
n–1 n–1 n–1 n–1
+ +
n n
1 1 2 2
x x
2 2
2 2
2 2 n–1 n–1
n–1 n–1
+ +
n n n n
1 1 2 2
is the level of