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z_score

평균이 0, 표준편차가 1인 정상분포에서의 개인점수를 말한다.

\begin{equation} 
\displaystyle z = \frac {X - \mu} {\sigma}}
\end{equation}

in R, pnorm(zscore) or pnorm(sd)

pnorm(1) - pnorm(-1)
pnorm(2) - pnorm(-2)
pnorm(3) - pnorm(-3)

in R, qnorm(percentage)

qnorm(.025)
qnorm(.975)
qnorm(0.025) 
qnorm(0.975) 

qnorm(0.01)
qnorm(0.99)

qnorm(0.001)
qnorm(0.999)
z_score.txt · Last modified: 2018/09/28 08:22 by hkimscil