THE TRANSFORMATION OF DATA FROM ENTOMOLOGICAL FIELD EXPERIMENTS

THE present paper deals with experiments on the control of insects in the field. In such experimental work the problem to be investigated is whether more insects survive on plots which have been subjected to one treatment than on plots subjected to another. It will be shown in the present paper that the numbers of insects found per plot must vary in such a way that one cannot, strictly, subject the results to the analysis of variance, and it is proposed to find how the data may be transformed so that analysis of variance becomes applicable. Such transformation has been discussed by Bartlett (1936a,b) in connexion with entomological experiments, and by Tippett (1934) in connexion with industrial experiments.