PSYC 210 Chapter Notes - Chapter 1: Morphine, Statistical Inference, Descriptive Statistics
20 Aug 2014
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Descriptive statistics: used whenever your purpose is merely to describe a set of data, example (cid:224) a statement about the average length of time it takes a normal mouse to lick its paw when placed on a warm surface would be a descriptive statistic as would be the time is takes a morphine injected mouse to do the same thing, reporting measures that describe the average latency scores or their variability, example (cid:224) rates, summary of information. Inferential statistics: small samples or single observations may be fine when we want to study something that has very little variability, example (cid:224) we don"t need a whole heard of cows to count how many legs a cow has, however, when we want to measure something that varies from one individual to another we need a larger sample, example (cid:224) change in response.
