\[\huge b_i\] | Regression coefficient |

\[\huge df\] | Degrees of freedom |

\[\huge e_i\] | Error associated with variable i |

\[\huge F\] | F-statistic |

\[\huge H\] | Kruskall-Wallis test statistic |

\[\huge k\] | Number of levels of variables |

\[\huge ln\] | Natural logarithm |

\[\huge MS\] | Mean squared error |

\[\huge N, n, n_1\] | Size of sample of population |

\[\huge P\] | Probablity |

\[\huge r\] | Pearson’s correlationcoefficient |

\[\huge r_s\] | Spearman’s rank correlationcoefficient |

\[\huge r_b\] | Biserial correlationcoefficient |

\[\huge r\] | Multiple correlationcoefficient |

\[\huge R^2\] | Determination coefficient |

\[\huge s\] | Standard deviation of sample of population |

\[\huge s^2\] | Variance of sample of population |

\[\huge SS\] | Sum of squares |

\[\huge SSA\] | Sum of squares of variable A |

\[\huge SS_M\] | Model of sum of squares |

\[\huge SS_R\] | Rest sum of squares |

\[\huge SST\] | Total sum of squares |

\[\huge t\] | Test statistic for t-test |

\[\huge t\] | Test statistic for Wilcoxon’s matched-pairs signed-rank test |

\[\huge U\] | Test statistic for Mann-Whitney test |

\[\huge W_s\] | Test statistic for Wilcoxon’s rank-sum test |

\[\huge\bar{x}\] | Mean of sample scores |

\[\huge z\] | Point of data expressed in units of standard deviation |

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