Środek rozstępu

Środek rozstępu[1] – średnia arytmetyczna największej i najmniejszej wartości w próbie:

[2]

Właściwości

Jest jedną z miar tendencji centralnej[3]. Środek rozstępu jest najlepszym estymatorem wartości mierzonej z populacji o rozkładzie jednostajnym[2]. Jest bardzo wrażliwy na występowanie skrajnych wartości odstających[4].

Zobacz też

Przypisy

  1. ↑ ISI - International Statistical Institute, Glossary of statistical terms [online], www.isi-web.org, 9 grudnia 2022.
  2. ↑ a b Stefan Kubisa, Zygmunt L. Warsza, Środek rozstępu jako estymator menzurandu dla próbek z populacji o rozkładzie jednostajnym i płasko-normalnym, „Pomiary Automatyka Kontrola”, 60 (6), 2014, s. 398-401.
  3. ↑ midrange, [w:] APA Dictionary of Statistics and Research Methods, Sheldon Zedeck (red.), Waszyngton: American Psychological Association, 2014, s. 215, DOI: 10.1037/14336.000, ISBN 978-1-4338-1533-1.
  4. ↑ M.F. Triola, Elementary statistics, wyd. 11, Boston: Addison Wesley, 2009, s. 87-88.

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