Statistical
Operations
11–3
File name 32sii-Manual-E-0424
Printed Date : 2003/4/24 Size : 17.7 x 25.2 cm
Correcting Errors in Data Entry
If you make a mistake when entering statistical data, delete the incorrect data
and add the correct data. Even if only one value of an
x
,
y
–pair is incorrect,
you must delete and reenter
both
values.
To correct statistical data:
1.
Reenter the incorrect data, but instead of pressing
6
, press
z
4
.
This deletes the value(s) and decrements n.
2.
Enter the correct value(s) using
6
.
If the incorrect values were the ones just entered, press
z
to
retrieve them, then press
z
4
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:
z
b
{
´
}
Clears existing statistical
data.
4
20
6
)
Enters the first new data pair.
6
400
6
)
Display shows
n
, the number
of data pairs yon entered.
z
)
Brings back last
x
–value. Last
y
is still in Y–register. (Press
Z
twice to check
y
.)
z
4
)
Deletes the last data pair.
6
40
6
)
Reenters the last data pair.
