Does anyone off hand have a formula for calculating the median absolute error for a set of xy points?
LMHmedchem
Does anyone off hand have a formula for calculating the median absolute error for a set of xy points?
LMHmedchem
is that involve subtracting values in one column from the other and summing the absolute results as per
http://www.ehow.co.uk/how_6426845_ca...ute-error.html
if so it would be
=SUMPRODUCT(ABS(A1:A10-B1:B10))/ROWS(A1:A10)
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I believe you are describing the mean absolute error. The median absolute error is a bit different but related. I will look for a reference and post it.
LMHmedchem
Maybe
=MEDIAN(SQRT((xRng1 - xRng2)^2 + (yRng1 - yRng2)^2))
... confirmed with Ctrl+Shift+Enter
Entia non sunt multiplicanda sine necessitate
is this valid then as a non array entered it gives the same result
=MEDIAN(INDEX(SQRT(($A$1:$A$7 - $B$1:$B$7)^2 + ($D$1:$D$7 - $E$1:$E$7)^2),0))
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