ONE WAY CLASSIFICATION OF ANALYSIS OF VARIANCE
1. The following table gives the retail prices of a commodity in some shops selected at random in four cities. Carry out the analysis of variance to test the significance of the difference between the price of commodity in four cities.
2. Four machines produce steel wire. The following data give the diameters at ten positions along the wire for each machine. Examine by performing the analysis of variance , whether the machine means can be regraded as constant.
3. Sample of pigs of each of four types were fed on the same ration over a period. The figures in the table denote increase in weight in lb. per pig at the end of the period. Do the sample means differ significantly.
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