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The following table gives the literacy rate ( in % ) of 25 cities. Find the median class and modal class.

Literacy rate (in percent) |
50-60 | 60-70 | 70-80 | 80-90 |

Number of cities | 9 | 6 | 8 | 2 |

is the ans median class 60-70 and modal class 50-60??

Literacy rate | Number of cities | Cumulative frequency |

50-60 | 9 | 9 |

60-70 | 6 | 15 |

70-80 | 8 | 23 |

80-90 | 2 | 25 |

N=25.So, N/2=12.5

The cumulative frequency just greater than N/2 is 15 and the corresponding class is 60-70.

So, 60-70 is the median class.

Here, the maximum frequency is 9 and the corresponding class is 50-60.

So, the modal class is 50-60.

Regards

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