solve the problem

Q No.1) a) Consider the following data: 24 31 33 31 20 12 35 26 20 34 34 35 21 26 79 31 22 26 27 28 33 35 30 33 26 30 34 36 25 32 34 30 37 34 32 30 37 37 38 21 39 40 40 41 38 38 Develop a grouped frequency distribution for the above data taking 3 units as the width of class interval. Indicate the class limits and class boundaries clearly