Percentage inter-segregated rectangular diagram : The budgets of various families can be mutually compared using such diagrams. Assuming the total income in these diagrams to be 100%, the expenditure on various heads is converted into percentage. For each family rectangles of equal height equal to 100 are constructed. The width of these rectangles is kept in proportion to total expenditure. Then on basis of percentage quantities of expenditure done on various heads, the rectangle is divided into various sections.