The heights of 5 students in a class are indicated as below: Name of students Shyam Mohindra Joy Viraj George Height (in cm) 148 130 140 160 142 Represent their heights by bar graph and pie chart.

We know that, A bar graph is a graphical representation of numerical data using bars (rectangles) of uniform width drawn vertically or horizontally with equal spacing between them. When the numerical data is represented by sectors of a circle, the figure obtained is called a pie chart. As the total angle subtended at the centre of a circle is 360 ° , the angle of a sector corresponding to an item is Angle of sector = Value of each data Sum of the values of all the data × 360 ° Sum of all the values here is 148 + 130 + 140 + 160 + 142 = 720 Angle subtended by Shyam = 148 720 × 360 ° = 74 ° Angle subtended by Mohindra = 130 720 × 360 ° = 65 ° Angle subtended by Joy = 140 720 × 360 ° = 70 ° Angle subtended by Viraj = 160 720 × 360 ° = 80 ° Angle subtended by George = 142 720 × 360 ° = 71 °