Transcription of RESEARCH METHODS 1: FREQUENCY DISTRIBUTIONS
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RESEARCH METHODS 1 Handouts, Graham Hole,COGS - version , September 2000: Page 1:DESCRIPTIVE STATISTICS - FREQUENCY DISTRIBUTIONS AND AVERAGES:Inferential and Descriptive Statistics:There are four main stages in doing RESEARCH : designing a study, collecting the data, obtainingdescriptive statistics and perhaps performing some inferential are a set of tools for obtaining insight into a psychological phenomenon. Descriptivestatistics summarise the data, making clear any trends, patterns etc. which may be lurking withinthem; they consist of visual displays such as graphs, and summary statistics such as statistics attempt to make inferences about the parent population on the basis of the limitedsamples actually obtained. The term inferential statistics is usually reserved for the various statisticaltests used for comparing two or more groups of subjects within an experiment, etc.
To turn a raw frequency into a relative frequency, divide the raw frequency by the total number of cases, and then multiply by 100. Thus (25/50)*100 = 50%, and (25/100)*100 = 25%. By converting frequencies to relative frequencies in this way, we can more easily compare frequency distributions based on different totals. If you display data
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