The favourite flavours of ice-creams for students of a school is given in percentages as follows.
|Flavours||Percentage of students Preferring the flavours|
|Other flavours||25 %|
Let us represent this data in a pie chart.
The total angle at the centre of a circle is 360°. The central angle of the sectors will be a fraction of 360°. We make a table to find the central angle of the sectors .
|Flavours||students in preferring the flavours||In fractions||Fraction of 360°|
|Chocolate||50 %||`50/100 = 1/2`||`1/2` of 360° = 180°|
|Vanilla||25 %||`25/100 = 1/4`||`1/4` of 360° = 90°|
|Other flavours||25 %||`25/100 = 1/4`||`1/4` of 360° =90°|
1. Draw a circle with any convenient radius. Mark its centre (O) and a radius (OA). (fig.)
2. The angle of the sector for chocolate is 180°. Use the protractor to draw ∠AOB = 180°. (fig.)
3. Continue marking the remaining sectors.
Shaalaa.com | Drawing Pie Charts 1
A group of 360 people were asked to vote for their favourite season from the three seasons rainy, winter and summer.
(1) Which season got the most votes?
(2) Find the central angle of each sector.
(3) Draw a pie chart to show this information.
|Season||No. of votes|
Draw a pie chart showing the following information. The table shows the colours preferred by a group of people.
|Colours||Number of people|
A survey was made to find the type of music that a certain group of young people liked in a city. Adjoining pie chart shows the findings of this survey.
From this pie chart answer the following −
1) If 20 people liked classical music, how many young people were surveyed?
2) Which type of music is liked by the maximum number of people?
3) If a cassette company were to make 1000 CD’s, how many of each type would they make?
Draw a pie-diagram for the following data of the investment pattern in a five year plan:
|Agriculture||Irrigation and Power||Small Industries||Transport||Social service||Miscellaneous|
Following is the break up of the expenditure of a family on different items of consumption:
|Expenditure (in Rs)||1600||200||600||150||100||80||270|
Draw a pie-diagram to represent the above data.
Draw a pie-diagram representing the relative frequencies (expressed as percentage) of the eight classes as given below:
12.6, 18.2, 17.5, 20.3, 2.8, 4.2, 9.8, 14.7
Represent the following data with the help of a pie-diagram:
|Production (in metric tons)||3260||1840||900|