July7_09 - Psychology 7e in Modules 1 1 Statistical...

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Unformatted text preview: Psychology 7e in Modules 1 1 Statistical Reasoning in Everyday Life Psych 1 Principles of Psychology 7/07/09 2 Statistical Reasoning in Everyday Life Describing Data, i.e. Descriptive Statistics s Measures of Central Tendencies s Measures of Variation s Correlation: A Measure of Relationships 3 Statistical Reasoning in Everyday Life Making Inferences, i.e. Inferential Statistics s When Is a Difference Reliable? s When Is a Difference Significant? 4 Describing Data A meaningful description of data is important in research. Misrepresentation may lead to incorrect conclusions. Psychology 7e in Modules 2 5 Measures of Central Tendency Mode: The most frequently occurring value in a distribution. Mean: The arithmetic average of values in a distribution obtained by adding the scores and then dividing by the number of values that were added together. Median: The middle value in a rank-ordered distribution....
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July7_09 - Psychology 7e in Modules 1 1 Statistical...

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