PSY 2106 Chapter Notes - Chapter 8: Type I And Type Ii Errors, Null Hypothesis, Statistical Hypothesis Testing
12 Apr 2020
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Document Summary
A statistical method that uses sample data to evaluate a hypothesis about a population. States that in the general population there is no change/difference/population. Predicts that the independent variable has no effect on the dependent variable (scores) for the population. States that there is a chance/difference/relationship for the general population. Predicts that the independent variable (treatment) does have an effect on the dependent variable. A probability value that is used to define the concept of very unlikely in a hypothesis test. Composed of the extreme sample values that are very unlikely to be obtained if the null hypothesis is true. Occurs when a researcher rejects a null hypothesis that is actually true. Occurs when a researcher fails to reject a null hypothesis that is really false. The probability that the test will lead to a type i error if the null hypothesis is true. A result that is very unlikely to occur when the null hypothesis is true.
