HP 12C Financial Programmable Calculator Manual do Utilizador Página 114

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113
1. Key in the program.
2. Press CLEAR .
3. Key in the first O
i
value and press .
4. Key in the first E
i
value and press .
5. Repeat steps 3 and 4 for all data pairs. The x
2
value is displayed.
6. For a new case, go to step 2.
Normal Distribution
The normal (or Gaussian) distribution is an important tool in statistics and
business analysis. The following HP-12C program gives an approximation
to the upper tail area Q under a standardized normal distribution curve,
given x. The upper tail area signifies the probability of occurrence of all
values
x.
Keystrokes Display
CLEAR
25
20
1.25
17
20
1.70
15
20
2.95
23
20
3.40
24
20
4.20
16
20
5.00
X
2
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