HP 33S - Page 145

Statistical Operations
11–3
File name 33s-E-Manual-1008-Publication(1st).doc Page : 386
Printed Date : 2003/10/8 Size : 13.7 x 21.2 cm
1. Reenter the incorrect data, but instead of pressing
/
, press
¹ -
. This
deletes the value(s) and decrements n.
2. Enter the correct value(s) using
/
.
If the incorrect values were the ones just entered, press
¹ Í
to retrieve
them, then press
¹ -
to delete them. (The incorrect y–value was still in the
Y–register, and its T–value was saved in the LAST X register.)
Example:
Key in the x, y–values on the left, these make the corrections shown on the right:
Initial x, y Corrected x, y
20, 4 20, 5
400, 6 40, 6
Keys: Display: Description:
¹ ¡
{

}

Clears existing statistical
data.
4
Ï
20
/


Enters the first new data
pair.
6
Ï
400
/


Display shows n, the
number of data pairs you
entered.
¹ Í


Brings back last x–value.
Last y is still in Y–register.
¹ -


Deletes the last data pair.
6
Ï
40
/


Reenters the last data pair.
4
Ï
20
¹ -


Deletes the first data pair.
5
Ï
20
/


Reenters the first data pair.
There is still a total of two
data pairs in the statistics
registers.
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