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20050501
Definition of Terms
C-Level : confidence level (0 < C-Level < 1)
List(1) : list where sample 1 data is located
List(2) : list where sample 2 data is located
Freq(1) : frequency of sample 1 (1 or list name)
Freq(2) : frequency of sample 2 (1 or list name)
Pooled : On or Off
o1 : mean of sample 1 data
x1
σ
n-1 : standard deviation of sample 1 (x1
σ
n-1 > 0)
n1 : size of sample 1 (positive integer)
o2 : mean of sample 2 data
x2
σ
n-1 : standard deviation of sample 2 (x2
σ
n-1 > 0)
n2 : size of sample 2 (positive integer)
Input Example:
Syntax 1 (list format)
TwoSampleTInt 0.95,list1,list2,1,1,Off
Syntax 2 (parameter format)
TwoSampleTInt 0.95,80.4,2.07,30,84.2,1.96,35,On
Calculation Result Output
Left : interval lower limit (left edge)
Right : interval upper limit (right edge)
df : degrees of freedom
o1 : mean of sample 1 data
o2 : mean of sample 2 data
x1
σ
n–1 : standard deviation of sample 1
x2
σ
n–1 : standard deviation of sample 2
xp
σ
n–1 : pooled sample standard deviation (Displayed only when pooling is
turned on.)
n1 : size of sample 1
n2 : size of sample 2
7-10-8
Confidence Intervals