HP HP-11C User Manual

Section 3: Numeric Functions 59
1. Keytheincorrect data pair into the X- and Y-registers.
Press [2-]to delete the incorrect data.
Key in the correct values for x and y. If one value of an (x, y)
data pair is incorrect, you must delete and re-enter both
values.
4. Press[z+].
Note: Although [g][ -] can be used to delete an erroneous
(x, y) pair, it will not delete any rounding errors that may have
occurred when the statistics of that pair were added into
accumulating registers R; through Rg. Consequently,
subsequent results may be different than they would have
been if the erroneous pair had not been entered via +]and
then deleted via X-]. However, the difference will not be
serious unless the erroneous pair has a magnitude that is
enormous compared with the correct pair; and in such a case
it may be wise to start over again and re-enter the data again
(and more carefully!).
Example. After keying in the preceding data, Voltz found new
information indicating that the coal output for the last data pair
should have been 1.946 instead of 1.943. Use to remove the
statistical data that was accumulated as a result of using the older,
incorrect data pair. Then input the correct data pair.
Keystrokes Display
1.943 1.9430 Key in the data pair we
6.713(9]( -] 4.0000 want to replace and delete
the pair’s unwanted
statistics. Number of pair
entries then drops to 4.
1.946 1.9460 Key in and accumulate
6.713 5.0000 the replacement data pair.
Number of pairs
accumulated is again five.
Retain the preceding statistics in your calculator for use in the
following examples.

HP HP-11C Specifications

General

Brand	HP
Model	HP-11C
Category	Calculator
Language	English