Confidence Interval
u
The following is the confidence interval. α is the level of significance. The value 100 (1 – α) % is the confidence level.
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| n : size of sample | |
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Left = |
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| x : data | |||
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Right = | x |
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| 1 x | 1– | x |
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Perform the following key operations from the statistical data list.
4(INTR)
1(Z)
Data is specified using parameter specification. The following shows the meaning of each item.
confidence level (0 | |
x .................................. | data (0 or positive integer) |
n .................................. | size of sample (positive integer) |
Save Res .................... | list for storage of calculation results (None or List 1 to 26) |
Execute ....................... | executes a calculation |
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) |
ˆp .................................. | estimated sample proportion |
n .................................. | size of sample |
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