Statistics in Psychology covers all statistical methods needed in education and research in psychology. This book looks at research questions when planning data sampling, that is to design the intended study and to calculate the sample sizes in advance. In other words, no analysis applies if the minimum size is not determined in order to fulfil certain precision requirements.The book looks at the process of empirical research into the following seven stages:Formulation of the problemStipulation of the precision requirementsSelecting the statistical model for the planning and analysisThe (optimal) design of the experiment or surveyPerforming the experiment or the surveyStatistical analysis of the observed resultsInterpretation of the results.

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