Qn.A study of reliability of buses was examined. The distance traveled (was in 1,000s of miles) prior to major motor failure a sample of 22 buses was taken whose distances traveled were as; (i)Present the distance traveled by a steam and leaf  (ii)Use 8 as classes and prove this with , to determine class interval  (iii)Construct a frequency distribution table for the buses  (iv)Plot out a histogram to represent the distance covered