# NCERT Class 8 Mathematics Chapter 15 Introduction to Graphs CBSE Board Sample Problems

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## Graphs

S. no | Term | Description |

1. | Graph | Graphs are visual representations of data collected |

2. | Bar Graph | A bar graph is used to show comparison among categories |

3. | Pie chart | A circle graph shows the relationship between a whole and its part |

4. | histograms | A Histogram is bar graph that shows data in intervals. It has adjacent bars over the intervals |

5. | Line graph | A line graph displays data that changes continuously over periods of time. |

6. | Liner graph | A line graph which is a whole unbroken line is called a liner graph |

### Cartesian System

The system of fixing a point with the help of two measurements, vertical and horizontal is known as Cartesian system