The marks obtained (out of 50) by 30 students of a class are given below:26,12,18,47,35, 46 ,28, 46,24 ,35 ,45 ,32, 16 ,24, 21 ,22 ,31, 9,26, 11,45 ,46, 16, 19,37, 40,45 ,21,48 ,29
a) construct a frequency distribution table for the data using equal class interval.
b) find the percentage of students who scored more than 45 marks