PSYB01H3 Chapter Notes - Chapter 13: Frequency Distribution, Type I And Type Ii Errors, Statistical Hypothesis Testing
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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. Conclusion validity: extent to which the conclusions about about the relationships among variables reached on the basis of the data are correct. Degrees of freedom (df): a concept used in tests of statistical significance; the number of observations that are free to vary to produce a known outcome. Error variance: random variability in a set of scores that is not the result of the independent variable. Statistically, the variability of each score form its group mean. F-test: a statistical significance test for determining whether two or more means are significantly different; also known as analysis of variance (anova). F is the ratio of systematic variance to error variance. Inferential statistics: statistics designed to determine whether results based on sample data are generalizable to a population.
