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### 15 Cards in this Set

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 Alpha (level of significance) Refers to the the probabilty of rejecting the null hypo when it is true. Value set by experimenter prior to collecting data. set at .01 or .05 Prob of making a Typoe I error Ancova (anaysis of covariance) version fo the Anova used to increase the efficiency of the analysis by statistically removing variability in the DV, due to extraneous variable. Autocorrelation occurs when performance of post-test correlates w/ performance of pretest. Between-Groups design Studies in which the effects of the different levels of one or more IV are compared by administering each level or combination of levels to a different group of participants. Central limit theorem Devrived probability theor. sampling size of mean will approach a normal shape as sample size increases. Mean equals Autocorrelation Inflates value fo t or F threfore resulting in increase prob of Type I error Central limit theorem mean equl to popluation mean Central limit theorem standard deviation equal to pop SD divided by sq root of the sample size Chi-square tests single sample Inferential stat test on a nominal scale. one variable Chi-square tests multiple sample Inferential stat test on a nominal scale. two or more variables Cluster sample units or groups of individuals from population Correlation Coefficient numerical index of degree of association of 2 or > V's. magnitiude = strength of relat -+ indicates direction Pearson r both V's represent a continuous scale point biserial one V is a true dichotomy and the other is continuous biserial one V is an artifical dichotomy and other is continuous.