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Lecture

ggr270 lecture sept 28

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Department
Geography
Course
GGR270H1
Professor
Damian Dupuy
Semester
Fall

Description
September 28Statistics and Parametersgraphs are limited in what they can tell us difficulty in making inferences about a population when looking at a subset or sampleso we need to use numerical measuresmeasures associated with a sample are statisticsparameter population and statistics sampleMeasures of the CentreMeanmost common measure of central tendencyit is the sum of all values divided by the number of observationssample measurementMedianvalue occupying the middle position of an ordered set of observationsorder of the observations lowest to highest and find the middle position05n1uneven observations odd number of observationseven observations use the same formula but youll have to add the two and divide it by twoMode value that
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