10 households in a neighbourhood are sorted acccording to their monthly income are given below 16500, 21700, 18600, 21050, 19500, 17000, 21000, 18000, 22000, 75000:-What is the mean income of these 10 families?

10 households in a neighbourhood are sorted acccording to their monthly income are given below 16500, 21700, 18600, 21050, 19500, 17000, 21000, 18000, 22000, 75000:- How many families have monthly income less than the mean income? Prove that in such situation this average is suitable or not?

11 households in a neighbourhood are sorted according to their monthly income are given below. '12000,14500,18000,13500,17800, 13800,19300,20000,11900,12800,14500' How many families have monthly income greater than the median income?

35 households in a neighbourhood are sorted according to their monthly income in the table below.Calculate the median income. .