HP HP-67 - Page 116

112 Function Keys
Although you could place data in the accumulation registers manually
using the and keys, the easiest way to accumulate the
required data in the secondary storage registers is through the use of
the key as described above.
Example: Below is a chart of daily
high and low temperatures for a winter
week in Fairbanks, Alaska. What are
the average high and low temperatures
for the week selected?
Sun. Mon. Tues. Wed. Thurs. Fri. Sat.
High 6 11 14 12 5 -2 -9
Low -22 -17 -15 -9 -24 -29 |-35
Press Display
0 CrE D
6 22
1.00
11 GHED 17
14 EIED 15
3.00
12 EHEE 9
5 ELED 24
Ensures that secondary
registers contain all zeros
initially. (Display
assumes no results re-
main from previous
calculations.)
Number of data pairs
(n) is now 1.
Number of data pairs
(n) is now 2.