The Second Edition of the Dictionary of Statistics and Methodology contains many examples and definitions written in ordinary English to help students get through a difficult journal article or passage. Author W. Paul Vogt pays special attention to terms that most often prevent educated general readers from understanding journal articles and books by emphasizing concepts over calculations. The level of explanation varies with the simplicity or complexity of the term defined so that more detail is offered for basic terms (for more introductory readers) while less is used to explain more advanced concepts for readers who have more background. In those instances in which it is necessary to use another methodological or statistical term in a definition, that term is cross-referenced and indicated by an asterisk.