Psychology 1000 Study Guide - Frequency Distribution, Normal Distribution, Standard Deviation

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14 Jul 2014
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PSYCH 1000 Full Course Notes
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PSYCH 1000 Full Course Notes
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Document Summary

Shows how many participants received a certain score. Tells us about what scores are more popular. Shows how scores are distributed: three commonly used measures of central tendency. Mode: most frequently occurring score in a distribution. Mean: arithmetic average of a set of scores. September 27, 2011: research includes large number of measurements, descriptive statistics summarizes and describes characteristics of a set, first there must be a frequency distribution distribution. Range: difference between the highest and the lowest score in distribution. Create a deviation score that measures distance between each sore: add up deviation scores and find deviation average. Sum of deviation scores will always add up to 0. Sum of the squared deviations equal the variance. Standard deviation can divide normal curve into areas containing: statistical methods for data analysis known percentages, psychologists want to know how variables relate to one another, accounting for variance in behaviour.