hi,
i need to find the slope for a multiple regression equation. I 3
columns Y,X1,X2 with values. Now normally i can use slope(known y,known
x) to get the slope. But in this case for the 100 variables i have i
need to get the slope in batches of 30 variable at a time.

example: y is in A1:A100
x1 is in B1:B100
x2 is in C1:C100

i need to be able to do:
slope(A1:A30,B1:C30)
slope(A2:A31,B2:B31)