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20050401
o1 ................................. mean of sample 1
x1
σ
n-1 ............................ standard deviation (x1
σ
n-1 > 0) of sample 1
n1 ................................. size (positive integer) of sample 1
o2 ................................. mean of sample 2
x2
σ
n-1 ............................ standard deviation (x2
σ
n-1 > 0) of sample 2
n2 ................................. 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 .............................. confidence interval lower limit (left edge)
Right............................ confidence interval upper limit (right edge)
df ................................. degrees of freedom
o1 ................................. mean of sample 1
o2 ................................. mean of sample 2
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 Pooled: On setting.)
n1 ................................. size of sample 1
n2 ................................. size of sample 2
6-6-11
Confidence Interval