# ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 441 - 443 of 472

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## Question number: 441

» Statistical Methods » Dispersion

### Question

What is the relation between the mean deviation (M. D. ) from the mean and the standard deviation (S. D. ) of the A. P.

### Choices

Choice (4) | Response | |
---|---|---|

a. | S D = M D | |

b. | S D < M D | |

c. | S D > M D | |

d. | No relationship exist between S D and M D |

## Question number: 442

» Statistical Methods » Dispersion

### Question

In a study to test the effectiveness of a new variety of wheat, an experiment was performed with 50 experimental fields and the following results were obtained:

Yield per Hectare (in quintals) | Number of Fields |

31 - 35 | 2 |

36 - 40 | 3 |

41 - 45 | 8 |

46 - 50 | 12 |

51 - 55 | 16 |

56 - 60 | 5 |

61 - 65 | 2 |

66 - 70 | 2 |

The mean yield per hectare is 50 quintals. Determine the standard deviation of the above distribution.

### Choices

Choice (4) | Response | |
---|---|---|

a. | 7.93 | |

b. | 7.61 | |

c. | 63 | |

d. | 58 |

## Question number: 443

» Statistical Methods » Collection, Compilation and Presentation of Data

### Question

Which of the following statement is/are correct regarding Statistical Presentation of data?

### Choices

Choice (4) | Response | |
---|---|---|

a. | Mean is a partition value which divides the series into two nearly equal parts and remains the centre of gravity. | |

b. | Mode of a data remains unaffected in presence of outliers. | |

c. | Mean is more robust statistics than median. | |

d. | All of the above |