The marks obtained by 35 students in an examination are given below: 370,290,318,175,170,410,378,405,380,375,315,305,325,275,241,288,261,355,402,380,178,253,428,240,210,175,154,405,380,370,306,460,328,440,425

In an examination, the marks obtained by 32 students are as below: 290,370,175,318,410,378,405,370,380,315,305,325,275,288,241,261,355,402,380,428,210,240,154,175,405,370,380,460,306,440,328,425. form a commulative frequency table with class intervals of length 50.