Once the scatterplot of the data values has been obtained, the next step is to find the regression equation.
Press STAT, then press the RIGHT ARROW to select CALC, then select 5, then ENTER. The screens on your calculator should show
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This gives the regression equation
(rounded
to three decimal places). In order to get the correlation
coefficient r to appear press 2nd,
then 0 [CATALOG]. Use the arrow keys, to arrow
down to DiagnosticOn. Then press ENTER to select and then ENTER
again to turn on the correlation coefficient.
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Now again press STAT, ARROW RIGHT to CALC, press 5, and then ENTER. The screen will appear as shown below.
In order to graph this function,
press Y= and enter
for 
. Then press GRAPH.
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Note: Click here,
to see how the regression equation can be automatically copied to
.
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