The data represented by a component bar diagram can also be represented equally well by a _____________.

pie chart

The correct answer is Option 4: Pie chart

A pie diagram is also a component diagram, but unlike a bar diagram, here it is a circle whose area is proportionally divided among the components it represents. The circle is divided into as many parts as there are components by drawing straight lines from the centre to the circumference. It may be interesting to note that data represented by a component bar diagram can also be represented equally well by a pie chart, the only requirement being that absolute values of the components have to be converted into percentages before they can be used for a pie diagram.