### Percentiles and quartiles - class-X

Description: percentiles and quartiles | |

Number of Questions: 15 | |

Created by: Varsha Mane | |

Tags: business economics and quantitative methods basic statistics for economics arithmetic mean maths measures of dispersion and skewness mode measures of dispersion averages and measures of spread median statistics and probability economics |

If the 2nd term of a GM series is 25, the first and 3rd terms will be _____.

_______ is used when most frequent occurring value if required. (discrete variable).

Extreme values have _______ effect on mode.

Which of the following is a "Positional Average"?

Which of the following sentence is/ are wrong is relation to 'Mode'?

_______ is that value of the variant which repeats maximum number of times in a distribution and around which other observations are densely distributed.

Which of the following sentence is/ are wrong in relation to 'Mode'?

The object of statistical averages is to ___________.

Find out the range for the following prices of shirts in a shop.

Rupees |
---|

150 |

250 |

100 |

500 |

175 |

450 |

300 |

280 |

Find out the coefficient of range for the following prices of shirts in a shop.

Rupees |
---|

150 |

250 |

100 |

500 |

175 |

450 |

300 |

280 |

Calculation of Decile for individual data:

Find the $D _4$ and from the following data.

$20,22,24,26,28,30,32,34,36$

Find $D _2$ for the following data:

Marks | 10 | 20 | 30 | 40 | 50 | 60 |
---|---|---|---|---|---|---|

No of Students | 5 | 6 | 4 | 5 | 10 | 9 |

Calculation of Decile for individual data:

Find the $D _8$ and from the following data.

$20,22,24,26,28,30,32,34,36$

Find $D _4$ for the following data.

Marks | 0-10 | 10-20 | 20-30 | 30-40 | 40-50 | 50-60 |
---|---|---|---|---|---|---|

No of Students | 5 | 6 | 5 | 5 | 10 | 9 |

For the following grouped frequency distribution find the mode:

Class: | 3-6 | 6-9 | 9-12 | 12-15 | 15-18 | 18-21 | 21-24 |
---|---|---|---|---|---|---|---|

Frequency: | 2 | 5 | 10 | 23 | 21 | 12 | 3 |