BIOL 115 Study Guide - Midterm Guide: Standard Deviation, Coevolution, Sympatric Speciation
Document Summary
Cannot be answered just by looking at something testable question (use an experiment to answer it, has to be measurable) hypothesis (turn question into an if, then, because statement) E. g. , (cid:498)what is the biggest volcano? (cid:499) is not a testable question. If the hotter water causes more wrinkling on fingers, then you could expect that putting your finger in cold water would not make your fingers as wrinkled hypothesis testing (create an experiment) Correlation: one variable moves in relation to the other. Causation: a change in one variable causes a change in another. Internal validity: your experiment is well conducted and you control for the right factors. External validity: you can generalize your findings to a larger population. Why do stats matter (not how to you perform descriptive statistics, but what do they tell you) Example: the mean tells you the middle, the standard deviation or variance tells you about the spread of the data.
