HP 32SII, Руководство пользователя

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11–2 Statistical Operations
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Entering One–Variable Data
1. Press z b {
Σ
} to clear existing statistical data.
2. Key in each x –value and press
6
.
3. The display shows n , the number of statistical data values now
accumulated.
Pressing 6 actually enters two variables into the statistics registers because
the value already in the Y–register is accumulated as the y –value. For this
reason, the calculator will perform linear regression and show you values
based on
y even when you have entered only x –data — or even if you have
entered an unequal number of x –and y –values. No error occurs, but the
results are obviously not meaningful.
To recall a value to the display immediately after it has been entered, press
z Ž .
Entering Two–Variable Data
When your data consist of two variables, x is the independent variable and y
is the dependent variable . Remember to enter an ( x , y ) pair in reverse order ( y
š x ) so that y ends up in the Y–register and X in the X–register.
1. Press z b {
Σ
} to clear existing statistical data.
2. Key in the y –value first and press š .
3. Key in the corresponding x –value and press
6
.
4. The display shows n , the number of statistical data pairs you have
accumulated.
5. Continue entering x , y –pairs. n is updated with each entry.
To recall an x –value to the display immediately after it has been entered,
press z Ž .