HP 35s Scientific Calculator - Manual (Page 256)

16-10 Statistics Programs
Now intentionally enter 379 instead of 37.9 so that you can see how to correct
incorrect entries.

 
 Enters y–value of data pair.
 
 Enters x–value of data pair.
 
 Enters y–value of data pair.
Keys:
(In RPN mode)
Display: Description:
 
 Enters wrong x–value of data pair.
 

Retrieves  prompt.
U 

Deletes the last pair. Now proceed
with the correct data entry.
 

Enters correct x–value of data pair.
 

Enters y–value of data pair.
 
 Enters x–value of data pair.
 
 Enters y–value of data pair.
 

Enters x–value of data pair.
 

Enters y–value of data pair.
 
 Enters x–value of data pair.
 
 Enters y–value of data pair.
R 

Calculates the correlation
coefficient.