HP 30b - Business Professional Calculator - Page 82

Statistical Operations74
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<<
<I<
Opens Sums sub-menu. Displays the sum of
all y values (Sigma
y).
Table 12-3 Statistics Example
Keys Display Description