Effect of using e~ to correct data, Equations, Margin and markup calculations – HP 10B User Manual
Page 132: Range of numbers
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Effect of Using E~ to Correct Data
The HP-lOB stores the statistical numbers in an ''accumulated” fashion. It
doesn't store every number that you enter, but rather it performs inter
mediate calculations when you press the EJ The BE l^cy performs
the opposite intermediate calculations to cfTcctively remove a number or
pair of numbers from the stored results.
When correcting statistical data, IE docs not delete rounding errors
that may occur during the intermediate calculations done by E* Thus,
subsequent results for corrected data may be different than for data that
was entered originally \Wthout having to use IE* However, the
difference will not be serious unless the incorrect data has a very large
magnitude compared with the correct values; in this case, you may want to
clear the statistical registers and re-enter the data.
Range of Numbers
The largest positive and negative numbers available on the calculator are
±9.99999999999 x 10^^; the smallest positive and negative numbers avail
able arc ±
1
X10'^’’. Undernow displays a zero. Refer to the message
OFLO in "Messages” following this appendix.
Equations
Margin and Markup Calculations
MAR
PRC
-
COST
PRC
X100
MU =
PRC
-
COST
COST
xlOO
B: More About Calculations
129