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This test is used when the standard deviations for two populations are known to test the hypothesis. The
Z = o1 | – o2 | o1 | : mean of sample 1 | ||||||
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| o2 | : mean of sample 2 |
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| σ 2 |
| σ 2 |
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| σ1 | : population standard deviation of sample 1 | |
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| n1 |
| n2 | σ2 | : population standard deviation of sample 2 | |||
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n1 : size of sample 1
n2 : size of sample 2
Perform the following key operations from the statistical data list.
3(TEST)
1(Z)
The following shows the meaning of each item in the case of list data specification.
Data ............................ | data type |
∝1 ................................. | population mean value test conditions (“G∝2” specifies two- |
| tail test, “< ∝2” specifies |
| smaller than sample 2, “> ∝2” specifies |
| sample 1 is greater than sample 2.) |
σ1 ................................. | population standard deviation of sample 1 (σ1 > 0) |
σ2 ................................. | population standard deviation of sample 2 (σ2 > 0) |
List(1) .......................... | list whose contents you want to use as sample 1 data |
| (List 1 to 26) |
List(2) .......................... | list whose contents you want to use as sample 2 data |
| (List 1 to 26) |
Freq(1) ........................ | frequency of sample 1 (1 or List 1 to 26) |
Freq(2) ........................ | frequency of sample 2 (1 or List 1 to 26) |
Save Res .................... | list for storage of calculation results (None or List 1 to 26) |
Execute ....................... | executes a calculation or draws a graph |
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