PSYC 2920 Chapter Notes - Chapter 12: Central Tendency, Frequency Distribution, Squared Deviations From The Mean
22 Mar 2018
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Bar graph: using bars to depict frequencies of responses, percentages, or means in two or more groups. Central tendency: a single number or value that describes the typical or central score among a set of scores. Cohen s d: a standardized calculation of effect size that is appropriate for two-group experimental designs. Correlation coefficient: an index of how strongly two variables are related to each other. Criterion variable: the outcome variable that is being predicted in a multiple regression analysis. Descriptive statistics: statistical measures that describe the results of a study; include measures of central tendency (e. g. , mean), variability (e. g. , standard deviation), and correlation (e. g. , pearson r) Effect size: the extent to which two variables are associated; in experimental research, the magnitude of the impact of the variable on the dependent variable. Frequency distribution: an arrangement of a set of scores from lowest to highest that indicates the number of times each score was obtained.
