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Download full textVanhove, Jan – Studies in Second Language Learning and Teaching, 2015
I discuss three common practices that obfuscate or invalidate the statistical analysis of randomized controlled interventions in applied linguistics. These are (a) checking whether randomization produced groups that are balanced on a number of possibly relevant covariates, (b) using repeated measures ANOVA to analyze pretest-posttest designs, and…
Descriptors: Randomized Controlled Trials, Intervention, Applied Linguistics, Statistical Analysis
Direct linkJohnson, Clay Stephen – ProQuest LLC, 2013
Synthetic control methods are an innovative matching technique first introduced within the economics and political science literature that have begun to find application in educational research as well. Synthetic controls create an aggregate-level, time-series comparison for a single treated unit of interest for causal inference with observational…
Descriptors: Educational Assessment, Statistical Inference, Academic Achievement, Statistical Bias
Kadhi, T.; Palasota, A.; Holley, D.; Rudley, D. – Online Submission, 2010
The following report gives the statistical findings of the 2009-2010 Watson-Glaser test. Data is pre-existing and was given to the Evaluator by email from the Director, Center for Legal Pedagogy. Statistical analyses were run using SPSS 17 to address the following questions: 1. What are the statistical descriptors of the Watson-Glaser results of…
Descriptors: Pretests Posttests, Statistical Significance, Classification, Achievement Tests
