PSYC 1F90 Chapter Notes - Chapter 79: Squared Deviations From The Mean, Standard Deviation, Normal Distribution

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Descriptive statistics mathematical tools used to describe and summarize numerical data. Describes and summarizes data collected from research participants so the results become more meaningful and easier to communicate to others. Do not allow us to draw any conclusions beyond the sample of participants. Inferential statistics mathematical tools used for decision making, for generalizing from small sample, and for. Used when we want to generalize beyond the sample to the larger population that it represents and for drawing conclusions testing hypotheses. There are three basic types of descriptive statistics: Graphical statistics techniques for presenting numbers pictorially, often by plotting them on a graph. By using a frequency distribution, large amounts of information can be neatly organized and summarized. Frequency distribution a table that divides an entire range of scores into a series of classes and then records the number of scores that fall into each class. Frequency distributions are often shown graphically to make them more visual .

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