# ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 457 - 461 of 472

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## Question number: 457

» Computer Application and Data Processing » Basics of Computer » Operations of a Computer

### Question

Real – time systems are used:

### Choices

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

a. | When data processed very slowly | |

b. | When two users use one programs | |

c. | In time critical environments where data must be processed extremely quickly | |

d. | Question does not provide sufficient data or is vague |

## Question number: 458

» Computer Application and Data Processing » Basics of Computer » Operations of a Computer

### Question

The key objective of a distributed operating system is:

### Choices

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

a. | Transparency | |

b. | Execution | |

c. | Working simultaneously with two programs | |

d. | Interaction of i/p and o/p |

## Question number: 459

» Probability » Tchebycheff's Inequalities

### Question

Let . Using Chebyshev’s inequality, find an upper bound on , where . Evaluate the bound for and .

### Choices

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

a. |
| |

b. |
| |

c. |
| |

d. | None of the above |

## Question number: 460

» Probability » Tchebycheff's Inequalities

### Question

While tossing 100 coin let H count the number of heads. Then what is the bound probability of using Tchebycheff’s Inequality?

### Choices

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

a. | 0.67 | |

b. | 0.75 | |

c. | 0.50 | |

d. | 0.33 |

## Question number: 461

» Statistical Methods » Non-Parametric Tests » Mann-Whitney

### Question

Which statement is correct for Mann-Whitney U Test?

**Statement 1:** It is a non-parametric test

**Statement 2:** Non-parametric test that is used to compare two sample means that come from the same population, and used to test whether two sample means are equal or not

### Choices

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

a. | Only Statement 1 is correct | |

b. | Only Statement 2 is correct | |

c. | Statements 1 and 2 are correct | |

d. | Statements 1 and 2 are incorrect |