> Anyone know of a VFP friendly Least Square Regression Routine? Free is

> good.

>

If you want the coefficients of a regression line :

CREATE CURSOR test (xi n(4),yi n(4))

INSERT INTO test VALUES (1,180)

INSERT INTO test VALUES (2,182)

INSERT INTO test VALUES (3,187)

INSERT INTO test VALUES (4,188)

***

SELECT ;

AVG(xi),;

AVG(yi),;

SUM( (xi-(select AVG(xi) FROM test as hihi))* (yi-(select AVG(yi) FROM

test as haha))),;

SUM((xi-(select AVG(xi) FROM test as hihi))**2) ;

FROM test ;

INTO ARRAY atest

ca = atest(3)/atest(4)

cb = atest(2) - ca*atest(1)

***

?"Y = ca.X + cb"

?"ca = ",ca

?"cb = ",cb

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