Deze samenvatting bevat alle belangrijke formules, hypothese testen & aantekeningen die je MOET kennen voor de final van statistiek voor premaster. Ook bevat de samenvatting handige "termen" die aangeven wat voor hypothese test/formule er van je wordt verwacht tijdens het tentamen.
In 2017 heb ik z...
, Lineaire transformaties discrete variabelen
Y = a + bX
à µy = a + bµx
à s y2 = b 2 * s x2
à sy = b * sx
Bij verwachtingswaarde voor 7 worpen onder dezelfde omstandigheden: bereken E(x) voor 1
worp en vermenigvuldig deze uitkomst met 7.
Bernouilli verdeling X ~ Bern (p)
Experiment met 2 uitkomsten: succes (x=1)
failure (x=0)
Hoe te herkennen in het tentamen?
Met de volgende term: “Experiment is done once”
E(x) = p
V(x) = p * (1-p) of p * (1-p)/n bij een sample
Binominale verdeling X ~ Bin (n,p)
Herhaaldelijke Bernouilli experiment
Hoe te herkennen in het tentamen?
“Experiment done multiple times”
E(x) = n * p
V(x) = n * p * (1-p)
!
f(k) = ( )*p" *(1 − p)!-"
"
n = aantal herhalingen
k = aantal successen
p = kans op succes
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