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#### Question

The length of 40 leaves of a plant are measured correct to one millimetre, and the obtained data is represented in the following table:-

Length (in mm) | Number of leaves |

118 - 126 | 3 |

127 - 135 | 5 |

136 - 144 | 9 |

145 - 153 | 12 |

154 - 162 | 5 |

163 - 171 | 4 |

172 - 180 | 2 |

(i) Draw a histogram to represent the given data. [Hint: First make the class intervals continuous]

(ii) Is there any other suitable graphical representation for the same data?

(iii) Is it correct to conclude that the maximum number of leaves are 153 mm long? Why?

#### Solution

#### Similar questions VIEW ALL

The following data on the number of girls (to the nearest ten) per thousand boys in different sections of Indian society is given below.

Section | Number of girls per thousand boys |

Scheduled Caste (SC) | 940 |

Scheduled Tribe (ST) | 970 |

Non SC/ST | 920 |

Backward districts | 950 |

Non-backward districts | 920 |

Rural | 930 |

Urban | 910 |

(i) Represent the information above by a bar graph.

(ii) In the classroom discuss what conclusions can be arrived at from the graph.

100 surnames were randomly picked up from a local telephone directory and a frequency distribution of the number of letters in the English alphabet in the surnames was found as follows:-

Number of letters | Number of surnames |

1 - 4 | 6 |

4 - 6 | 30 |

6 - 8 | 44 |

8 - 12 | 16 |

12 - 20 | 4 |

(i) Draw a histogram to depict the given information.

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The following table gives the life times of 400 neon lamps:-

Life time (in hours) | Number of lamps |

300 - 400 | 14 |

400 - 500 | 56 |

500 - 600 | 60 |

600 - 700 | 86 |

700 - 800 | 74 |

800 - 900 | 62 |

900 - 1000 | 48 |

(i) Represent the given information with the help of a histogram.

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1 | Reproductive health conditions | 31.8 |

2 | Neuropsychiatric conditions | 25.4 |

3 | Injuries | 12.4 |

4 | Cardiovascular conditions | 4.3 |

5 | Respiratory conditions | 4.1 |

6 | Other causes | 22.0 |

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1 - 2 | 5 |

2 - 3 | 3 |

3 - 5 | 6 |

5 - 7 | 12 |

7 - 10 | 9 |

10 - 15 | 10 |

15 - 17 | 4 |

Draw a histogram to represent the data above.