HP HP-67 - Page 113

Function Keys 109
... and the storage register contents are changed...
...from this... ...to this.
Addressable Storage Registers Addressable Storage Registers
Primary Registers Primary Registers
] I
Re [ Re ]
R[] R[]
Re__— Re[ 1]
Re___ R[]
AR Y E—
Protected Protected
Secondary Registers Secondary Registers
R[] R
R[] R[]
RO RO
R[] L
R RO
RO RO
R R,
R[] R
AR R,
R[] Ro [
Before you begin accumulating results in secondary storage registers
Rg4 through Rgg using the key, you should first ensure that the
contents of these registers have been cleared to zero by pressing
a followed by [ (F=5).
Note: Unlike storage register arithmetic,the function
allows overflows (i.e., numbers whose magnitudes are
greater than 9.999999999 x 10°°) in storage registers Rs,
through Rs, without registering in the
display.
After you have accumulated these products and sums using the
key, they remain in the secondary storage registers, where they are
used to compute mean and standard deviation using the and ()
functions.