Question

The histogram drawn on the graph represents the number of students of different heights (in cm).

Using the graph, answer the following:

1. The number of students whose height is 150 cm and above.
2. The modal height.
3. The total number of students.

Answer 1

(a) From the graph,

Students whose height = 150 cm

150 − 160 = 9 students

160 − 170 = 4 students

Total number of students whose height is 150 cm and above

= 9 + 4

= 13

Hence, the number of students whose height is 150 cm and above = 13.

(b) From the graph,

The vertical line intersects the x-axis at 137.

Hence, the modal height = 137 cm.

(c) Total number of students = 6 + 2 + 9 + 14 + 12 + 9 + 4

= 56

Hence, the total number of students = 56.