## Basic Concepts in Educational Research: A WorkbookEnables students to determine which of the concepts presented in Basic Concepts in Educational Research they have been able to master. Includes numerous questions dealing with the educational research and statistical concepts presented in the textbook. Problems are presented that involve mathematical calculations or interpretations of statistical results. Answers are included. |

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### Contents

MEASURES OF CENTRAL TENDENCY AND DISPERSION | 1 |

NORM SCORES | 13 |

CORRELATION ANALYSIS | 23 |

RELIABILITY | 31 |

VALIDITY | 41 |

SAMPLING | 49 |

RESEARCH DESIGN | 53 |

HYPOTHESIS TESTING | 61 |

CORRELATED t TEST | 75 |

INDEPENDENT t TEST | 85 |

ONEWAY ANALYSIS OF VARIANCE | 93 |

TWOWAY ANALYSIS OF VARIANCE | 105 |

ANALYSIS OF COVARIANCE | 117 |

CHISQUARE TEST | 131 |

ANSWERS | 143 |

SELECTION OF A STATISTICAL TEST | 71 |

### Common terms and phrases

alpha at 0l alpha level Analysis of Variance ANC0VA Results ANSWERS CHAPTER Cathy chi-square test concurrent validity correlation coefficient value covariate critical value degrees of freedom dependent variable Explain exposed to Method external validity F value F-distribution grade Hawthorne effect hypothesis be rejected instructional methods interaction effect internal validity interval scale IQ levels level of 05 listed in Table mean posttest math mean posttest reading minus multiple comparisons number of degrees number of students Pete post-course posttest math scores posttest reading score pretest and posttest pretest scores Problems The following quartile Questions Question rejected yes Score Student Score scores are listed Scores for Problem Set alpha Squares F squares value standard deviation standard scores Stanine Student Score Score Student Score Student students are randomly students exposed sum of squares teachers transformed Z scores two-tailed two-way AN0VA Type I error Type II error variable is measured W0RKSPACE Problem