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A complete set of equations is given for computing the various “sums of squares” of deviations about the several means of an experiment involving a number of increments of varying weight, taken in close order within groups but with an appreciable interval between groups. Methods of determining the sampling constants
An appendix considers a “short cut” method of eliminating the effect of errors of “reduction and analysis” from the “crude estimates” of
Bertholf, W. M.
Efficiency Engineer, By-Product Coke Plant, Colorado Fuel and Iron Corp., Pueblo, Colo