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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, align the cursor with [Execute] and then press the function
key shown below to perform the calculation.
• 1(CALC) ... Performs the calculation.
Calculation Result Output Example
Left .............................. interval lower limit (left edge)
Right ............................ 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
1-3-11
Confidence Interval (INTR)