HP 20b HP 20b Calculator Quick Start Guide - Page 39
z<<, <I<
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Table 3-2 Statistics Example Keys < Display :z
Statistical Operations
39
Table 3-2
Statistics Example
Keys
Display
Description
<
Displays current value for
Correlation.
:z<<
<I<
Opens Sums sub-menu.
Displays current value for the
sum of all y values (Sigma
Y).