PSY201H1 Chapter Notes -Estimation Theory, Statistical Inference, Statistical Hypothesis Testing
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+ use sample scores to make a statement about a characteristic of the population. In hypothesis testing, experimenter collecting data in an experiment on a sample set of subject in an attempt to validate some hypothesis involving a population. + example: an educational psychologist believes a new method of teaching math to third graders in her school district (population) is superior to the usual way of teaching the subject. + in her experiment, employs two samples of third graders one is taught using new method, other the old. + each group tested on the same final exam. Improvement does not apply just to the particular sample tested. Rather, improvement would be found in whole population of third graders if they were taught by the new method . In parameter estimation experiments, experimenter is interested in determining the magnitude of a population characteristic.
