APPLICATION OF RCBD IN DETERMINING DEVIATION OF PRICES OF BASKET COMMODITIES IN SUPERMARKETS IN MOMBASA COUNTY

Abstract

This study reveals the significant deviation, correlation and statistical significance and variance on the prices of the commodities charged by the four supermarkets in Mombasa County. A statistical model, Randomized Completely Block Design has been used to ascertain the significance deviation with the sample size taken as twenty five basket commodities of each category, selected from four leading supermarkets in Mombasa. Coefficient of determination for drinks and beverages, food-stuff and non-foodstuff was: 50.3%, 78.2% and 84% respectively. Null hypothesis was rejected at 95% C.I, correlation coefficient was 0.987** at 99%, this showed significance in correlation and statistical significance.