## Statistics at Square One |

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### Contents

Tabulation and mean | 1 |

Standard deviation | 7 |

Populations and samples | 16 |

Copyright | |

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140 children anatomical dead space Answer average boys calculating the standard chance class intervals column confidence limits correlation coefficient degrees of freedom diastolic blood pressure discrete variable disease diverticulosis divided Dr Green Dr Pink's drawn dropping zone electronic calculators example Exercise expected number farmers figures Find the sum fourfold table frequency distribution gives globulin fraction groups height influenza investigation kala-azar large number level of probability mean and standard measurements memory method midpoint mmol/l multiplied normal distribution null hypothesis number of children number of observations number of pairs number of visits observations minus obtained percentages population mean printers procedure random numbers random sample range rank sum tests regression represents sample mean scatter diagram SEdiff significance smaller square root standard deviation standard error statistical subtracted tied ranks tion total number urinary lead concentration urine vaccine variation Wilcoxon women x2 test