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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 numbe
r
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.