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Statistica descriptiva: media, mediana, modalul, deviatia standard, IQR (interquartile range), tipuri de grafice
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Statistica descriptiva: media, mediana, modalul, deviatia standard, IQR (interquartile range), tipuri de grafice
Ghid in folosirea masuratorilor pentru tendinta centrala si dispersie
Media, mediana si modalul
Intervalul
Deviatia, percentile si IQR
Grafice folosite pentru vizualizarea datelor
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Statistica descriptiva descrie datele dintr-un esantion.

Masurarea tendintei centrale

  1. Media aritmetica
  2. Mediana
  3. Modalul
  4. Media geometrica
  5. Media armonica

Masurarea dispersiei

  1. Intervalul (range)
  2. Deviatia standard (SD)
  3. Eroarea standard (SE)
  4. Percentilele si IQR
  5. Coeficientul de variatie

 


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Last Updated on Saturday, 18 April 2009 19:26
 

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