## How to Read Statistics |

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### Contents

CHAPTER PACE I Introduction | 1 |

The Frequency Distribution | 5 |

Measures of Central Tendency | 11 |

Copyright | |

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### Common terms and phrases

actual analysis of variance bar graph boys central tendency chance chapter class intervals coefficient of correlation comparison computation correlation chart correlation ratio critical ratio Cumulative Frequency data of Table degrees of freedom determine difference enrolled example fifth-grade pupils frequency distribution freshmen given high school illustration indicated individuals instance interpretation involved items of information large number mean deviation mean parameter mean statistic measures of dispersion measures of significance median method minus normal frequency curve null hypothesis number of degrees number of pupils number of samples obtained pairs per-cent level perfect correlation predictive factors probable error problem quantities quartile random samples regression equation regression line relationship represented result sampling distribution scale score on Test scores earned shown in Figure standard deviation standard error standard score statistician teachers teaching technique tion total area total number total population trait value of sigma variation vertical axis wages words zero