And yet a third way is
=SUMPRODUCT(y-range, x-range)/SUMSQ(x-range)
or the equivalent
=SUMPRODUCT(y-range, x-range)/SUMPRODUCT(x-range, x-range)
best wishes
--
Bernard V Liengme
www.stfx.ca/people/bliengme
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"Dennis" wrote in message
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how to get slope with a forced intercept of zero in excel