CRIM 220 Lecture Notes - Lecture 12: Chi-Squared Distribution, Contingency Table, Interquartile Range
25 Aug 2016
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Document Summary
Ordinal measurement: has rank ordered attributes that have no meaningful distance between them and no meaningful zero point: strongly disagree, agree, neutral. Interval level measurement: has rank but no zero. Monte carlo computer simulations: a technique that"s used to address what occurs when certain assumptions that are required by probability theory are violated. Variance: measure of dispersion or spread of scores around the mean: calculated by taking the average squared difference of each score from the mean of all scores in the distribution. Standard deviation: a measure of dispersion, expressed in the standard units, that indicates the average distance that any given score in a distribution of scores will be from the mean score in that distribution. Inferential statistics: stats used to facilitate drawing conclusions about data conclusions concerning the extent to which variables are associated and whether differences exist among groups.
