Casio fx-9860G Series User Manual page 349

¯ x
................................. mean of sample 1
1
σ
x
............................ standard deviation (
n
1 -1
n
................................. size (positive integer) of sample 1
1
¯ x
................................. mean of sample 2
2
σ
x
............................ standard deviation (
n
2 -1
n
................................. size (positive integer) of sample 2
2
After setting all the parameters, use
the function key shown below to perform the calculation.
• 1(CALC) ... Performs the calculation.
Calculation Result Output Example
Left ............................... confi dence interval lower limit (left edge)
Right ............................. confi dence interval upper limit (right edge)
df
................................. degrees of freedom
¯ x
................................. mean of sample 1
1
¯ x
................................. mean of sample 2
2
σ
x
............................ standard deviation of sample 1
n
1 -1
σ
x
............................ standard deviation of sample 2
n
2 -1
σ
x
............................ pooled sample standard deviation
p n
-1
n
................................. size of sample 1
1
n
................................. size of sample 2
2
6-6-11
Confi dence Interval
σ
x
1
σ
x
2
to move the highlighting to "Execute" and then press
(Displayed only when Pooled: On setting.)
20070201
> 0) of sample 1
n
-1
> 0) of sample 2
n
-1