HP 30b Business Professional Calculator - Manual (Page 82)

Statistical Operations 74
To reset the menu items to their default values, with any item of the Data or Statistics menus
displayed press
:x
. At the prompt, Stats, press
I
. Confirm your choice by
pressing
I
.
< Displays value for a: the slope of the
regression line.
< Displays current value for b: the y -intercept
of the regression line.
< Displays value for Correlation.
:z << Opens Sums sub-menu. Displays the sum of
all y values (Sigma
y ).
Table 12-3 Statistics Example
Keys Display Description