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Press the STAT key.
Press the ► key.
Press the number 8 key.
Press the 2
nd
key and then the number 1 key to get L1.
Press the , (comma) key.
Press the 2
nd
key and then the number 2 key to get L2.
Press the , (comma) key.
Press the VARS key.
Press the ► key.
Press the ENTER key.
Press the number 1 key to get Y1.
Press the ENTER key.
The LinReg output shows the:
general model: y=a+bx
y-intercept: a=79.1116729
slope: b=-.053528248
coefficient of determination: r
2
=.0020735171
linear correlation coefficient: r=-.0455358879
If the coefficient of determination and correlation coefficient do not show on the LinReg output,
you need to turn the diagnostics on using the DiagnosticOn function. To display the coefficient
of determination r
2
and linear correlation coefficient r you need to use the following command
only once and from then on it will be displayed every time you compute a regression model.
Press CATALOG (located above the 0 key) and use the down arrow key until you find the
command DiagnosticOn, and then execute it by pressing the ENTER key.
Press the 2
nd
key and then press the 0 key to get
to CATALOG.
By pressing the first letter of the function you are looking
for you can save time getting to the function.
The ALPHA key is engaged automatically when you go
into CATALOG so to get to the letter D press the x
-1
key.
Use the ▼ key to continue down until you find DiagnosticOn.
Press the ENTER key.
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