In this book, we introduce readers to the main techniques of statistical analysis employed by psychologists and sociologists. However, we do not see the book as a standard introduction to statistics. We see the book as distinctively different because we are not concerned to introduce the often complex formulae that underlie the statistical methods covered. Students often find these formulae and the calculations that are associated with them extremely daunting, especially when their background in mathematics is weak. Moreover, in these days of powerful computers and packages of statistical programs, it seems gratuitous to put students through the anxiety of confronting complex calculations when machines can perform the bulk of the work. Indeed, most practitioners employ statistical packages that are run on computers to perform their calculations, so there seems little purpose in treating formulae and their application as a rite de passage for social scientists. Moreover, few students would come to understand fully the rationale for the formulae that they would need to learn. Indeed, we prefer the term ‘quantitative data analysis’ to ‘statistics’ because of the adverse image that the latter term has in the minds of many prospective readers. In view of the widespread availability of statistical packages and computers, we feel that the two areas that students need to get to grips with are how to decide which statistical procedures are suitable for which purpose and how to interpret the ensuing results. We try to emphasise these two elements in this book.

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