find out the interquartile range, quartile deviation and coefficient of quartile deviation from the following data. 7, 10, 12, 15, 16, 18, 21, 25, 30, 35 Share with your friends Share 1 Shvetika Sharma answered this Dear student X 7 10 12 15 16 18 21 25 30 35 Q1 =Size of N+14th item =Size of 10 + 14thitem = 2.75 thitem =2ndvalue + 0.75 (3rdvalue - 2ndvalue) = 10 + 0.75 (2 - 10) = 10 + 0.75 ×2 = 11.5Q3 =Size of 3N+14th item =Size of 310 + 14thitem = 8.25 thitem =8thvalue + 0.25 (9thvalue - 8thvalue) = 25 + 0.25 (30- 25) = 25 + 0.25 ×5 = 26.25a. Interquartile Range = Q3 - Q1 = 26.25 - 11.5= 14.75b. Quartile Deviation = Q3 - Q12= 26.25 -11.52 = 7.375c.Coefficient of Quartile Deviation = Q3 - Q1Q3 + Q1=14.7526.25 + 11.5=0.39 Regards 2 View Full Answer