Draw a histogram of the following data.

Answer: Histogram with rectangles of heights 4, 12, 16, 8 on the classes 135–140, 140–145, 145–150, 150–155

Steps: Take height of student (cm) on the X-axis and no. of students on the Y-axis, with a convenient scale on each. Since the first class does not start at 0, show a kink mark between the origin and the first class. On each class interval draw a rectangle whose height equals its frequency; adjacent rectangles touch each other (no gaps). The tallest rectangle is for the class 145–150 (frequency 16).