HP NW280-200X User Manual page 208

Setup plot
Plot the graph
Display the
equation
202
10. Find the mean sales
( ).
y
The mean sales,
is approximately
$1,796.
Press to
return to Numeric view.
1 1. Change the plotting range to ensure that all the data
points are plotted (and to select a different data-point
indicator, if you wish).
(Setup)
SP
\ 100
E
4000
E
12. Plot the graph.
P
Notice that the
regression curve (that
is, a curve to best fit
the data points) is
plotted by default.
13. Return to the Symbolic view.
Y
Note the expression
in the field. It
Fit1
shows that the slope
,
y
Statistics 2Var app