## Pie Charts

A survey of a group of 360 people shows the brand of handphones they use. The results of the survey are presented in the table below.

Handphone brand |
Apple iPhone |
Samsung |
Google Pixel |
Others |
No handphone |

Number of people |
90 |
180 |
36 |
45 |
9 |

From the above, the fraction of the group that uses:

Apple iPhone:

=

Samsung:

=

Google Pixel:

=

Other handphones:

=

No handphone:

=

Now, let's take all these fractions and present them in a more readable form so they are easy to compare. We'll use what we call a pie chart as below.

Apple iPhone:

90 |

360 |

1 |

4 |

Samsung:

180 |

360 |

1 |

2 |

Google Pixel:

36 |

360 |

1 |

10 |

Other handphones:

45 |

360 |

1 |

8 |

No handphone:

9 |

360 |

1 |

40 |

Now, let's take all these fractions and present them in a more readable form so they are easy to compare. We'll use what we call a pie chart as below.

The above circle graph known as a pie chart shows the popularity of handphone brands among the group.

Now, let's answer some questions based on the above pie chart.

**a) Which was the most popular handphone brand? Explain.**

Samsung; because it got the biggest pie in the pie chart - half the pie.

**b) What percentage of the group used the Apple iPhone?**

1 whole pie = 100%

1 |

4 |

25% of the group used Apple iPhone.

1 |

4 |

**c) How many times as many people used Samsumg handphones as compared to those who used Apple iPhone?**

Samsung -->

1 |

2 |

Apple iPhone -->

1 |

4 |

1 |

2 |

1 |

4 |

1 |

2 |

4 |

1 |

2 times as many people used Samsung handphones as compared to those who used Apple iPhone.

**d) What percentage of the people surveyed used Google Pixel?**

1 |

10 |

10% of the people surveyed used Google Pixel.