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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
.
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
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
.
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
.