%CO:A,9,75%
%H2%Linear Regression



-------data------
%H2%Month
%V%%R%%D0%1
%V%%R%%D0%2
%V%%R%%D0%3
%V%%R%%D0%4
%V%%R%%D0%5
%V%%R%%D0%6
%V%%R%%D0%7
%V%%R%%D0%8
%V%%R%%D0%9
%V%%R%%D0%10
%V%%R%%D0%11
%V%%R%%D0%12
-------------------------------------------------------
%V%%R%%D0%sum(A8A19)
%CO:B,9,66%


Formula: Predicted sales = (slope*month) + intercept
      

%H2%Sales
%V%%R%%D0%161
%V%%R%%D0%194
%V%%R%%D0%208
%V%%R%%D0%204
%V%%R%%D0%186
%V%%R%%D0%203
%V%%R%%D0%225
%V%%R%%D0%211
%V%%R%%D0%197
%V%%R%%D0%209
%V%%R%%D0%222
%V%%R%%D0%213

%V%%R%%D0%sum(B8B19)
%V%%R%B21/F21
%CO:C,9,57%





%H2%x^2
%V%%R%%D0%A8^2
%V%%R%%D0%+A9^2
%V%%R%%D0%+A10^2
%V%%R%%D0%+A11^2
%V%%R%%D0%+A12^2
%V%%R%%D0%+A13^2
%V%%R%%D0%+A14^2
%V%%R%%D0%+A15^2
%V%%R%%D0%+A16^2
%V%%R%%D0%+A17^2
%V%%R%%D0%+A18^2
%V%%R%%D0%+A19^2

%V%%R%%D0%sum(C8C19)
%CO:D,9,48%



%H4%y = ax + b

%H2%y^2
%V%%R%%D0%B8^2
%V%%R%%D0%B9^2
%V%%R%%D0%B10^2
%V%%R%%D0%B11^2
%V%%R%%D0%B12^2
%V%%R%%D0%B13^2
%V%%R%%D0%B14^2
%V%%R%%D0%B15^2
%V%%R%%D0%B16^2
%V%%R%%D0%B17^2
%V%%R%%D0%B18^2
%V%%R%%D0%B19^2

%V%%R%%D0%sum(D8D19)
%CO:E,9,39%





%H2%x*y
%V%%R%%D0%A8*B8
%V%%R%%D0%A9*B9
%V%%R%%D0%A10*B10
%V%%R%%D0%A11*B11
%V%%R%%D0%A12*B12
%V%%R%%D0%A13*B13
%V%%R%%D0%A14*B14
%V%%R%%D0%A15*B15
%V%%R%%D0%A16*B16
%V%%R%%D0%A17*B17
%V%%R%%D0%A18*B18
%V%%R%%D0%A19*B19

%V%%R%%D0%sum(E8E19)
%CO:F,5,30%





%H2%n













%V%%R%%D0%count(A8A19)
%CO:G,9,25%





%H2%Pred.
%V%%R%A8*$I$7+$I$9
%V%%R%A9*$I$7+$I$9
%V%%R%A10*$I$7+$I$9
%V%%R%A11*$I$7+$I$9
%V%%R%A12*$I$7+$I$9
%V%%R%A13*$I$7+$I$9
%V%%R%A14*$I$7+$I$9
%V%%R%A15*$I$7+$I$9
%V%%R%A16*$I$7+$I$9
%V%%R%A17*$I$7+$I$9
%V%%R%A18*$I$7+$I$9
%V%%R%A19*$I$7+$I$9

%V%%R%sum(G8G19)
%V%%R%G21/F21
%CO:H,9,16%





%H2%slope =
%H2%intercept
      =
%CO:I,9,7%





%V%%R%((F21*E21)-(B21*A21))/((F21*C21)-(A21*A21))

%V%%R%(B21/F21)-(I7*A21)/F21
