# ISS (Statistical Services) Statistics Paper II (New 2016 MCQ Pattern): Questions 249 - 253 of 253

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## Question 249

### Question

MCQ▾The telegraph function has autocorrelation function of:

### Choices

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

a. | 1 | |

b. | ||

c. | ||

d. |

## Question 250

### Question

MCQ▾A process is Martingale if and only if:

### Choices

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

a. | For all | |

b. | is adapted to where is a filtration | |

c. | For all | |

d. | All a., b. and c. are correct |

## Question 251

### Question

MCQ▾In a wide-sense stationary process the autocorrelation is a function is:

### Choices

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

a. | ||

b. | ||

c. | Autocorrelation does not depend on s or t | |

d. |

## Question 252

### Question

MCQ▾Consider the following Markov chain with state space

What is the probability that the chain in state b when it is already in state b.

### Choices

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

a. | 0.0 | |

b. | 0.33 | |

c. | 0.2 | |

d. | 0.5 |

## Question 253

### Question

MCQ▾In a wide-sense stationary process the mean function is:

### Choices

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

a. | ||

b. | ||

c. | ||

d. |