# Measurement and Methodology-Statistical Procedures [GRE (Graduate Record Examinations) Psychology]: Questions 17 - 19 of 27

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## Question 17

### Question

MCQ▾A researcher has performed an experiment with a random sample. He wants to test his results for statistical significance and then draw conclusions about his population. He should use which of the following type of statistics?

### Choices

Choice (5) | Response | |
---|---|---|

a. | Descriptive statistics | |

b. | Inferential statistics | |

c. | Referential statistics | |

d. | Correlations | |

e. | Frequency distributions |

## Question 18

### Question

MCQ▾An analysis of variance is more appropriate than multiple t tests when analyzing data from multiple group experiments because ________.

### Choices

Choice (5) | Response | |
---|---|---|

a. | The possibility of rejecting a null hypothesis that is true is more likely using an analysis of variance. | |

b. | Significant effects are more likely to be found with an analysis of variance. | |

c. | Multiple t tests in one experiment increase the chance of a Type 1 error. | |

d. | Doing many t tests increases the chances of Type 2 error. | |

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

## Question 19

### Question

MCQ▾The Acme Scale of Aggression has a + 0.10 correlation with four other standardized aggression scales. Also, a correlation of + 1.00 exists between the scores of any student who takes the Acme Scale of Aggression twice. This indicates that the Acme Scale of Aggression has

### Choices

Choice (5) | Response | |
---|---|---|

a. | low face validity but high reliability | |

b. | high content validity but low reliability | |

c. | moderate external validity and moderate reliability | |

d. | low internal validity but high external validity | |

e. | low concurrent validity but high reliability |