Casio CLASSWIZ CG Software User's Manual page 50

1-Proportion Z Interval
2-Proportion Z Interval
1-Sample t Interval
2-Sample t Interval
4. Select the sample data specification method.
(1) Highlight [Data] and then press O.
(2) Perform the operations described in the table below.
To do this:
Use a list variable to specify the sample data
Input the sample mean, standard deviation, and
number of data points
5. Input values for the parameters.
(1) Highlight [C-Level] and then use the number keys to input the confidence level.
• Input a value between 0 and 1. Commonly used confidence levels are 0.95 (95%) and 0.99 (99%).
(2) Press O.
(3) Input the other parameters.
• See "Confidence Interval Types and Parameters" (page
6. Press >. Or highlight
• This displays confidence interval calculation results and summary statistics of the sample data on the
Results tab. The meanings of the items that appear on the display are provided below.
Confidence interval calculation results
Lower: confidence interval lower limit
Upper: confidence interval upper limit
df : degrees of freedom
p : estimated sample proportion
p : estimated proportion of sample 1
1
p : estimated proportion of sample 2
2
Note
• You can use the operation below to save values currently displayed on the Results tab to a list.
(1) Select T > [Save Result in List].
(2) Use the dialog that appears to input a list number
* Input the number of an empty list. Overwrite saving is not available.
• The values displayed on the Results tab are stored in the variables in the menu items shown below.
Confidence interval calculation results: C > [Variable Data] >
Interval] (page 241)
Summary statistics of the sample data: C > [Variable Data] >
[Z Confidence Interval] > [1-Proportion Z Interval]
[Z Confidence Interval] > [2-Proportion Z Interval]
[t Confidence Interval] > [1-Sample t Interval]
[t Confidence Interval] > [2-Sample t Interval]
Perform this operation:
On the menu that appears, highlight [List] and then
press O.
On the menu that appears, highlight [Variable] and
then press O.
and then press O.
Summary statistics of sample data
−
x :
−
x :
1
−
x :
2
s :
x
s :
x1
s :
x2
:
s
p
n :
n :
1
n :
2
*
and then press O.
50
51).
mean of sample
mean of sample 1
mean of sample 2
sample standard deviation
standard deviation of sample 1
standard deviation of sample 2
pooled sample standard deviation
size of sample
size of sample 1
size of sample 2
[Statistics] > [Result] > [Confidence
[Statistics] > [Input] (page 241)
To Step 5
To Step 4