(A). Nigerian Bottling Company, Challawa Kano has Tensales territories with approximatelyTen salesmen working in each territory. Sales orders achieved for July were as follows:

TerritoriesABCDEFGHIJ

Sales150130140150140300110120140120

From the sales data above, calculate the following:

(i). Arithmetic mean (ii). Mode(iii). Median(iv). Lower Quartile(v). UpperQuartile(vi). Quartile Deviation(vi). Standard Deviation(vii). Mean Deviation

(B). What is a hypothesis and how can the chances of Type I and Type II errors be minimised?