PSYC 2920 Chapter Notes - Chapter 13-14: Type I And Type Ii Errors, Statistical Hypothesis Testing, Null Hypothesis
22 Mar 2018
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Alpha level: in a statistical analysis, the maximum probability that a result having been declared significant by exceeding this value has actually come from the null hypothesis sampling distribution. F test: a statistical significance test for determining whether two or more means are significantly different; aka anova. F is the ratio of systematic variance to error variance. Conclusion validity: the extent to which the conclusions about the relationships among variables reached on the basis of the data are correct. Degrees of freedom: a concept used in tests of statistical significance; the number of observations that are free to vary to produce a known outcome. Error of variance: random variability in a set of scores that is not the result of the independent variable; statistically, the variability of each score from its group mean. Inferential statistics: statistics designed to determine whether results based on sample data are generalized to a population.
