Casio SERIES FX-9860G - Manual (Page 349)

20070201
¯x
1
................................. mean of sample 1
x
1
σ
n -1
............................ standard deviation ( x
1
σ
n -1
> 0) of sample 1
n
1
................................. size (positive integer) of sample 1
¯x
2
................................. mean of sample 2
x
2
σ
n -1
............................ standard deviation ( x
2
σ
n -1
> 0) of sample 2
n
2
................................. size (positive integer) of sample 2
After setting all the parameters, use c to move the highlighting to “Execute” and then press
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
1
................................. mean of sample 1
¯x
2
................................. mean of sample 2
x
1
σ
n -1
............................ standard deviation of sample 1
x
2
σ
n -1
............................ standard deviation of sample 2
x
p
σ
n -1
............................ pooled sample standard deviation
(Displayed only when Pooled: On setting.)
n
1
................................. size of sample 1
n
2
................................. size of sample 2
6-6-11
Confi dence Interval