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 z4. 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 Ž to retrieve them, then press z4to 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:

zb{´}



4 š20 6

)

6 š400 6

)

zŽ

)

z4

)

6 š40 6

)

Clears existing statistical data.

Enters the first new data pair. Display shows n, the number of data pairs yon entered.

Brings back last x–value. Last y is still in Y–register. (Press

Ztwice to check y.) Deletes the last data pair. Reenters the last data pair.

Statistical Operations 11–3

File name 32sii-Manual-E-0424

 

Printed Date : 2003/4/24

Size : 17.7 x 25.2 cm