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Study Guide For Chapters 1 And 2

1808 words - 7 pages

AP Probability & Statistics Study Guide for Ch. 1 and Ch. 2 (Date: 10/12/14)Index:Index……………………………………………………………………………………………...1Some Definitions……………………………………………………………………….............2Box Plots…………………………………………………………………………………………5Normal Probability Distributions……………………………………………………………….8Misc. (A.K.A. Not in PPT I Found)………...…..……………………………………………..10Some Definitions:Population - the complete collection of all elements (scores, people measurements, and so on) to be studied. The collection is complete in the sense that it includes all subjects to be studiedParameter - a numerical measurement describing some characteristic of a populationCensus - the collection of data from every member of the populationSample - a sub-collection of elements drawn from a populationStatistic - a numerical measurement describing some characteristic of a sampleRandom sample - members of the population are selected in such a way that each individual member has an equal chance of being selectedSimple random sample (of size n) - subjects selected in such a way that every possible sample of same size n has the same chance of being chosenSystematic sampling - select some starting point and then select every Kth element in the populationConvenience sampling - use results that are easy to getStratified sampling - subdivide the population into at least two different subgroups that share the same characteristics, then draw a sample from each subgroup or stratumCluster sampling - divide the population into sections (or clusters); randomly select some of those clusters; choose all members from selected clustersObservational study - observing and measuring specific characteristics without attempting to modify the subject being studiedSampling error - the difference between s ample result and the true population result; such an error results from chance sample fluctuationsNonsampling error - sample data that are incorrectly collected, recorded, or analyzed (such as by selecting a biased sample, using a defective...

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