Look at the histogram below and answer the questions that follow.
(a) How many students have height more than or equal to 135 cm, but less than 150 cm ?
(b) Which class interval has the least number of students?
(c) What is class size?
(d) How many students have height less than 140 cm?
(a) Number of students who have height more than or equal to 135 cm, but less than 150 cm = 14+ 18+ 10 = 42
(b) The class interval 150-155 has the least number of students, i.e. 4.
(c) We-know, class size = Upper class limit – Lower class limit Consider any class, say (125-130), then class size = 130-125 = 5 Hence, the class
size is 5.
(d) Number of students who have height less than 140 cm = 6 + 8 + 14 = 28
Click here to get exam-ready with eSaral
For making your preparation journey smoother of JEE, NEET and Class 8 to 10, grab our app now.