ConceptHistograms, Frequency Polygon and Frequency Curve

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#### Question

Draw the frequency polygon for the following frequency distribution

Rainfall (in cm) | No. of Years |

20 — 25 | 2 |

25 — 30 | 5 |

30 — 35 | 8 |

35 — 40 | 12 |

40 — 45 | 10 |

45 — 50 | 7 |

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Represent the following data by Histogram:

Price of Sugar per kg (in Rs.) | Number of Weeks |

18-20 | 4 |

20-22 | 8 |

22-24 | 22 |

24-26 | 12 |

26-28 | 8 |

28-30 | 6 |

Given below is the frequency distribution of driving speeds (in km/hour) of the vehicles of 400 college students:

Speed (in km/hr) | No. of Students |

20-30 | 6 |

30-40 | 80 |

40-50 | 156 |

50-60 | 98 |

60-70 | 60 |

Draw Histogram and hence the frequency polygon for the above data.

The marks scored by students in Mathematics in a certain Examination are given below:

Marks Scored | Number of Students |

0 — 20 | 3 |

20 — 40 | 8 |

40 — 60 | 19 |

60 — 80 | 18 |

80 — 100 | 6 |

Draw histogram for the above data.

Solution for concept: Histograms, Frequency Polygon and Frequency Curve. For the course 9th - 10th SSC (English Medium)