Casio CLASSWIZ CG Software User's Manual page 51

Confidence Interval Types and List Variables
To find confidence intervals using a list of sample data, create the following list variables according to the
confidence interval type.
Sample data:
One sample data (no
frequencies)
One sample data (with
frequencies)
Two sample data (no
frequencies)
Two sample data (with
frequencies)
Confidence Interval Types and Parameters
Parameters in the table below that are marked with an asterisk (
[Variable] in step 4 of the procedure under
Confidence interval type:
1-Sample Z Interval
2-Sample Z Interval
1-Proportion Z Interval
2-Proportion Z Interval
1-Sample t Interval
2-Sample t Interval
Required list variable(s):
List variable to assign to List
Two list variables to assign to List and Freq
Two list variables to assign to List(1) and
List(2)
Four list variables to assign to List(1),
List(2), Freq(1), Freq(2)
"Operation Flow" (page
Parameter:
σ : population standard deviation ( σ > 0)
−
*
: mean of sample
x
n : size of sample (positive integer)
: population standard deviation of sample 1 ( σ
σ
1
σ : population standard deviation of sample 2 ( σ
2
−
*
x : mean of sample 1
1
n : size of sample 1 (positive integer)
1
−
*
x : mean of sample 2
2
n : size of sample 2 (positive integer)
2
x : sample value ( x ≥ 0 integer)
n : size of sample (positive integer)
: data value of sample 1 ( x
x
1
n : size of sample 1 (positive integer)
1
: data value of sample 2 ( x
x
2
n : size of sample 2 (positive integer)
2
− *
: mean of sample
x
s : sample standard deviation ( s
x
n : size of sample (positive integer)
−
*
x : mean of sample 1
1
: standard deviation of sample 1 ( s
s
x1
: size of sample 1 (positive integer)
n
1
−
*
x : mean of sample 2
2
s : standard deviation of sample 2 ( s
x2
n : size of sample 2 (positive integer)
2
Pooled: pooling On (in effect) or Off (not in effect)
51
Setup tab display:
*
) need to be input when you select [Data] >
49).
*
> 0)
1
> 0)
2
*
*
≥ 0 integer)
1
≥ 0 integer)
2
*
> 0)
x
*
*
> 0)
x1
*
*
> 0)
x2
*