## Descriptive statistics for teachers |

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### Contents

PREFACE vii | 1 |

Organization and Presentation of Data | 19 |

Measures of Typical Performance | 41 |

Copyright | |

4 other sections not shown

### Common terms and phrases

assume average biology class chemistry class Classes Biology computed continuous variable determine difference in z-scores differences in percentile differences in performance distribution of scores eleventh grade equal differences example extreme scores formula grades graph highest score illustrated in Table interquartile range interval frequencies interval scale IQ scores lower exact limit lowest score math mean measure of typical measure of variability median score middle range midpoint mode multiplied nominal data normal distribution number of scores number of students number of words ordinal data ordinal scale percent percentile rank physics class range of scores ratio scale relationship relative cumulative frequency relative frequency Roots of Numbers scatter diagram Score Frequency score interval score points score values scores fall scores that fell sets of scores seventy-fifth percentile Spanish Square Roots standard deviation standard scores statistics students that fell teacher tells total number twenty-fifth percentile typical performance upper exact limit words correct