20090601
Calculation Result Output
Lower : interval lower limit (left edge)
Upper : interval upper limit (right edge)
M
: sample mean
s
x
: sample standard deviation
n
: sample size
Example
list1 : { 1.6, 1.7, 1.8, 1.9 }
Significance level : 5% ( = confidence level : 95%)
• Statistics Wizard Operation
(1) Input the data into [list1] in the Stat Editor.
(2) On the menu bar, tap [Calc] and then [Interval].
(3) Select [One-Sample TInt] and then tap [Next >>].
(4) Input value.
(5) Select List [list1] and Freq [1].
(6) Tap [Next >>].
S
Program, eActivity or Main Application
Command: OneSampleTInt
:
Command Syntax
Syntax 1 (list format)
C-Level value, List, Freq (or 1)
* “Freq” can be omitted. Doing so sets “1” for “Freq”.
Syntax 2 (parameter format)
C-Level value,
M
value, s
x
value,
n
value
Input Example:
Syntax 1 (list format)
OneSampleTInt 0.95,list1,1
Syntax 2 (parameter format)
OneSampleTInt 0.95,66.3,8.4,12
2-Sample
t
Interval
Menu: [Interval]-[Two-Sample TInt]
Description: This command obtains the confidence interval for the difference between two
population means when the population standard deviations are unknown.
The confidence interval is obtained using the following expressions.
The confidence level is 100 (1 –
A
)%.
7-10-8
Confidence Intervals
To Next Page
Loading...
