statistiska beteckningar

The exercise was created 2025-02-20 by klaraKatona. Question count: 20.

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  • X Enskild observation i population
  • μ (my) Medelvärde i population
  • x̄ (x bar) Medelvärde i stickprov
  • σ (lilla sigma) Standardavvikelse i population
  • s (sd) Standardavvikelse i stickprov
  • s2 varians i stickprov
  • σ2 (sigma 2) Varians i population
  • N Antalet observationer i population
  • n Antalet observationer i stickprov
  • α (alfa) Högsta accepterade risk för typ 1 fel (signifikansnivå)
  • β (beta) Högsta accepterade risk för typ 2 fel
  • p Sannolikhet för att resultatet beror på slumpen
  • df Frihetsgrader
  • ρ (rå) Korrelation i population
  • r Korrelation i stickprov
  • Σ (stora sigma) Summatecken
  • Φ (Stora fi) Phi
  • χ² Chi-2
  • H 0 (H-noll) Nollhypotes
  • H 1 (H-ett) Altenativ hypotes

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