Question

In a survey, people were asked to indicate which one of five musical instruments they played. The information is given in the table. Display the information in a pie chart​

Answer 1

Given :

• Guitar = 45
• Violin = 12
• Recoreder = 23
• Drum = 15
• Keyboard = 25

To find :

• the information in a pie chart​

Solution :

⇒ Let's add up to total.

Total = 45 + 12 + 23 + 15 + 25

        = 120

⇒ Now, let's write them as fractions.

• Guitar = 45/120
• Violin = 12/120
• Recorder = 23/120
• Drum = 15/120
• Keyboard = 25/120

⇒ Now, we have to multiply 360° by the fractions to find the angles.

• Guitar = 45/120 x 360°

                   = 16200/120

                   = 135°

• Violin = 12/120 x 360°

                  = 4320/120

                  = 36°

• Recorder = 23/120

                        = 23/120 x 360°

                        = 8280/120

                        = 23°

• Drum = 15/120

                   = 15/120 x 360°

                   = 5400/120

                   = 45°

• Keyboard = 25/120

                         = 25/120 x 360°

                         = 9000/120

                         = 75°

⇒ Since, we have calculated all the angles, we can present them.

• Now, we have to draw a big circle.
• Then, we have to mark the middle of the circle, and then, we have to measure the degree of each sector using a Protractor.

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• Please check the attachment for viewing the Pie-Chart.