


Learn in your speed, with individual attention - Teachoo Maths 1-on-1 Class
Last updated at May 29, 2023 by Teachoo
Ex 13.3, 2 If the median of the distribution given below is 28.5, find the values of x and y. Now, Median = l + (π΅/π βππ)/π Γ h Since Median = 28.5 20 β 30 is Median Class Where N = ββππ l = h = cf = f = Putting values in formula Median = l + (π/2 βππ)/π Γ h 28.5 = 20 + (30 β (5+ π₯))/20 Γ 10 28.5 = 20 + (25 β π₯)/2 28.5 β 20 = (25 β π₯)/2 8.5 = (25 βπ₯)/2 8.5 Γ 2 = 25 β x 17 = 25 β x x = 25 β 17 x = 8 Also, ββππ = 45 + x + y Putting values 60 = 45 + 8 + y 60 = 53 + y 60 β 53 = y 7 = y y = 7 Hence, x = 8, y = 7