1
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The following frequency distribution shows the distance thrown by 68 students

The following frequency distribution shows the distance (in metres) thrown by 68 students in a Javelin throw competition.

Draw a less than type Ogive for the given data and find the median distance thrown using this curve.

2
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The following distribution shows the daily pocket allowance of children of a locality

The following distribution shows the daily pocket allowance of children of a locality. The mean pocket allowance is Rs.18. Find the missing frequency k.

3
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By changing the following frequency distribution ‘to less than type’

By changing the following frequency distribution ‘to less than type’ distribution, draw its ogive.

5
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The table below shows the salaries of 280 persons

The table below shows the salaries of 280 persons:

Salary (In thousand Rs.) | No. of persons |

5-10 | 49 |

10-15 | 133 |

15-20 | 63 |

20-25 | 15 |

25-30 | 6 |

30-35 | 7 |

35-40 | 4 |

40-45 | 2 |

45-50 | 1 |

Calculate the median salary of the data.

6
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The mean of the following distribution is 18. Find the frequency f of the class 19 - 21

The mean of the following distribution is 18. Find the frequency f of the class 19 - 21.

Class | 11-13 | 13-15 | 15-17 | 17-19 | 19-21 | 21-23 | 23-25 |

Frequency | 3 | 6 | 9 | 13 | f | 5 | 4 |

7
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The following distribution gives the daily income of 50 workers of a factory

The following distribution gives the daily income of 50 workers of a factory.

Daily income (in Rs.) | 100-120 | 120-140 | 140-160 | 160-180 | 180-200 |

Number of workers | 12 | 14 | 8 | 6 | 10 |

Convert the distribution above to a less than type cumulative frequency distribution, and draw its ogive.

8
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Find the mode of the following distribution of marks obtained by the students

Find the mode of the following distribution of marks obtained by the students in an examination:

Given the mean of the above distribution is 53, using empirical relationship estimate the value of its median.

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