## The following table gives the literacy rate (in percentage) o f 35 cities. Find the mean literacy rate.

Question : Literacy rate (in %) 45 – 55 55 – 65 65 – 75 75 – 85 85 – 95 Number of cities 3 10 11 8 3 Solution : Let the assumed mean, A = 70 and class size, h = 10 So, \(u_i\) = \(x_i – 70\over 10\) Literacy rate (in %) …