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Exercise 3679. Points 3, theme: U-test

Open exercise
  1. How significant (numerically) is the difference between covcerage of coniferous (okasmets) and deciduous (lehtmets) forest according to U testi and attached data? Land cover categories are in the column Maakate/cover.
  2. Which of these groups has higher mean coverage?
  3. Why the t test is not proper for comparing forest coverage values estimated as percentages?
  4. Add the software name you used.
Data: SAAREMAA.xls


Think about theoretical presumptions when choosing a statistical method.

Difference tests in the SDC.

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