Study GuidePsychology–Psychology: Measurement and Statistics1.Descriptive StatisticsDescriptive statistics is a set of methods that help us summarize and describe data in a meaningfulway. Before we can make sense of data, we need to organize it, measure it, and express it asnumbers. Common ways to summarize data aremeasures of central tendency(like mean, median,and mode) andmeasures of variability(like range, variance, and standard deviation).1.1 Organizing DataThe first step in working with data is usuallyorganizing it visually. This makes patterns easier tosee. Common tools for this include:•Frequency distributions•Histograms•Frequency polygonsFrequency DistributionAfrequency distributionis a table that shows how often each value occurs. It’s a neat way toorganize your data so you can see patterns at a glance.Example:How many hours students studied for an exam.Preview Mode
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