HP 35s User Manual page 321

Linear Regression
Linear regression, or L.R. (also called linear estimation), is a statistical method for
finding a straight line that best fits a set of x,y–data.
To find an estimated value for x (or y), key in a given hypothetical value for y
(or x) ,press
To find the values that define the line that best fits your data, press
followed by (), (), or ().

, then press
 ˆ
 
( ) (or
 Õ
(
 
ALG: Summary
 ˆ
)).
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