Show that for ANY data set, the sum of the positive deviations from the eman must be exactly equal to the sum of negative deviations from the mean?
I can work this out when subbing in values, but can anyone prove it with formulae?
Show that for ANY data set, the sum of the positive deviations from the eman must be exactly equal to the sum of negative deviations from the mean?
I can work this out when subbing in values, but can anyone prove it with formulae?