Easy Statistics in Psychology

Designed for those approaching this subject for the first time, Easy Statistics in Psychology is a short, readable guide to the ideas behind statistical formulae and the benefits that a rigorous statistical approach brings to psychological research. Packed with useful analogies, it helps students get beyond the numbers. Focuses on the ideas and practicalities of statistics in psychology, rather than an array of complex numbers and formulas Covers the key tests and concepts relevant to the undergraduate student Includes a helpful section on the uses and abuses of statistics, outlining when the specific tests can be used and when they should not Written by the author of Your Undergraduate Psychology Project: A BPS Guide (Blackwell, 2004)

Preface ix Acknowledgement xi 1 An Introduction to Measuring Things 1 2 Variance and More 11 3 Probability, Power and Error 23 4 First Steps in Inferential Testing 43 5 Analysis of Variance 51 6 Correlation and Regression 71 7 Factor Analysis 75 8 Goodness of Fit and Chi-Squared 101 9 Non-parametric Tests 111 10 Rarely Used Tests in the Seedy Underbelly of Statistics 115 References 125 Further Reading 127 Index 129