Reading Pie Charts

Introduction of reading pie chart:

            Let us see about reading pie chart. The charts like pie chart, line graph, and bar chart these are all in studies of statistics. In pie chart the dataus are describing into a circle. It is better to displaying the particular data. It is also helped to calculate the percentages of the data.

Definition:

        Let us see reading of pie chart. The circle is estranged into numerous segments for indicates the data. The segments are helped to describe the dataus as in percentage design. The angle of segments is alienated by their statistics data.

Determine the pie chart:

            Let us see reading of pie chart. There are several steps to compute the pie chart. The steps of manipulative pie chart are describing below:

Step 1: Discover the viewpoint of each sector.

            Segments angle = {(frequency of data) / (complete frequency) * 360 degree.

Step 2: Locate a circle with the measurement of 360 degree.

Step 3: Locate the angle for all segments.

Step 4: Estimate the data percentages of given problem and disconnect the circle.

These are the steps assisted to reading about pie chart.

Examples:

Let us see about some examples reading pie chart.

Example 1:

In an ECE department, 80 students have 4 arrear, 30 students have 2 arrear, 10 students have 3 arrear and 40 students have no arrear. Calculate and draw how the pie chart is represented.

Solution:

The total number of students = 80 + 30+ 10 + 40 = 160.

2 arrear:   size of angle = (80 /160) * 360 degree = 180.

3 arrear:  Size of angle = (30 / 160) * 360 degree = 67.5.

4 arrear: size of angle   = (10 / 160) * 360 degree = 22.5.

No arrear: size of angle = (40 / 160) * 360 degree = 90.

The pie chart is relating below:

pie chart

Thus the pie chart is drawn for the given data.

Example 2:

People like vegetables. 300 people like carrot. 500 people like beetroot. 600 people like potato and 200 people like lady finger. Calculate and draw how the pie chart is represented.

Solution:

Total number of People = 300+500+600+200 =1600.

Carrot: size of angle = (300/1600) * 360 = 67.5.

Beetroot: size of angle = (500/1600) * 360 = 112.5.

Potato: size of angle = (600/1600) * 360= 135.

Lady finger: size of angle = (200/1600) * 360 = 45.

The pie graph is describing below.

pie chart

Thus the pie chart is drawn for the given data.