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 Problem: coefficient of percentile deviation {1,2,3,2,3,6} [ Calculator, Method and examples ]Solution:Your problem -> coefficient of percentile deviation {1,2,3,2,3,6}Percentile deviation :Arranging Observations in the ascending order, We get :1, 2, 2, 3, 3, 6Here, n = 6P_10 = ((10(n+1))/100)^(th) value of the observation=((10*7)/100)^(th) value of the observation=(0.7)^(th) value of the observation=0^(th) observation  + 0.7 [1^(st) - 0^(th)]=0 + 0.7 [1 - 0]=0 + 0.7 (1)=0 + 0.7=0.7P_90 = ((90(n+1))/100)^(th) value of the observation=((90*7)/100)^(th) value of the observation=(6.3)^(th) value of the observation=6^(th) observation  + 0.3 [7^(th) - 6^(th)]=6 + 0.3 [0 - 6]=6 + 0.3 (-6)=6 + -1.8=4.2Inter Percentile range =P_90 - P_10=4.2-0.7=3.5Percentile deviation =(P_90 - P_10)/2=(4.2-0.7)/2=3.5/2=1.75Coefficient of Percentile deviation =(P_90 - P_10)/(P_90 + P_10)=(4.2-0.7)/(4.2+0.7)=3.5/4.9=0.7143

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