# CBSE Class 10-Mathematics: Chapter –14 Statistics Part 13

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**Question 6:**

Find the median of the following frequency distribution:

Wages (in Rs.) | |||||

No. of Labourer |

**Answer:**

We have

Wages (in Rs.) | No. of labourer (f) | C.F |

200-300 | 3 | 3 |

300-400 | 5 | 8 |

400-500 | 20 | 28 |

500-600 | 10 | 38 |

600-700 | 6 | 44 |

Now and this lies in class.

Median class

Here,

We know that

**Question 7:**

The following tables gives production yield per hectare of wheat of farms of village:

Production yield | ||||||

No. of farms | 2 | 8 | 12 | 24 | 38 | 16 |

Change the distribution to a more than type distribution and draw its O give.

**Answer:**

More than type O give

Production yield (Kg/ha) | C.F |

More than or equal to 50 | |

More than or equal to 55 | |

More than or equal to 60 | |

More than or equal to 65 | |

More than or equal to 70 | |

More than or equal to 75 |

Now, draw the O given by plotting the points

**Question 8:**

The A.M of the following distribution is . Determine the value of P.

Classes | |||||

Frequency |

**Answer:**

We have

Class Interval | Mid-value | Frequency | |

0-20 | 10 | 8 | 80 |

20-40 | 30 | 15 | 450 |

40-60 | 50 | 20 | 1000 |

60-80 | 70 | P | 70P |

80-100 | 90 | 5 | 450 |

Since Mean,

Thus,