# Measurement and Methodology (GRE Psychology): Questions 13 - 17 of 88

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## Question number: 13

» Measurement and Methodology » Psychometrics, Test Construction, Reliability, Validity

### Question

A behavioral observation checklist requires the observer to note whether the person being observed smiles. A key source of error variance resulting from this requirement is

### Choices

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

a. | all of the above. | |

b. | content variance. | |

c. | item sampling variance. | |

d. | scoring variance. |

## Question number: 14

» Measurement and Methodology » Statistical Procedures

### Question

The amount of variance in scores accounted for by a correlation coefficient of -. 70 is

### Choices

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

a. | 14 % if the reliability of the measures is greater than. 70 | |

b. | less than zero because the correlation is negative | |

c. | indeterminate because the correlation is negative | |

d. | almost 50 % if the reliability of the measures is + 1.00 |

## Question number: 15

» Measurement and Methodology » Statistical Procedures

### Question

An IQ of 146 is approximately how many standard deviations from the mean?

### Choices

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

a. | 5 | |

b. | 3 | |

c. | 2 | |

d. | 4 |

## Question number: 16

» Measurement and Methodology » Statistical Procedures

### Question

In a normal frequency distribution, 32 % of the cases

### Choices

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

a. | fall between 1 standard deviation above and 1 standard deviation below the mean | |

b. | fall beyond 1 standard deviation above and 1 standard deviation below the mean | |

c. | fall beyond 2 standard deviations above and 2 standard deviations below the mean | |

d. | fall between the mode and the median |

## Question number: 17

» Measurement and Methodology » Analysis and Interpretation of Findings

### Question

A random sample of students in a lecture hall could be obtained by selecting

### Choices

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

a. | the students who raise their hands first | |

b. | every fifth student seated throughout the room | |

c. | the students with credit card numbers ending in 5 | |

d. | every seventh student who volunteers |