Category Archives: Geography Practicals/Lab and Statistical Techniques

Chi-Square Test Example

You research two groups and put them in categories single, married or divorced: The numbers are definitely different, but … Is that just random chance? Or have you found something interesting?   The Chi-Square Test gives a “p” value to help you … Continue reading

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Conical Projections

Four well-known normal conical projections are the Lambert conformal conic projection, the simple conic projection, the Albers equal-area projection and the Polyconic projection. They give useful maps of mid-latitudes for countries which have no great extent in latitude. 1.Lambert conformal conic projection: The Lambert conformal conic projection is confomal. The … Continue reading

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Normal Distribution

A normal distribution, sometimes called the bell curve, is a distribution that occurs naturally in many situations. For example, the bell curve is seen in tests like the SAT and GRE. The bulk of students will score the average (C), while … Continue reading

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Defining Spatial Data

Geographic position refers to the fact that each feature has a location that must be specified in a unique way. To specify the position in an absolute way a coordinate system is used. For small areas, the simplest coordinate system … Continue reading

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