Tests for Normality
- Normality of the torque ratio and residual stress
- Null hypothesis is that it is normal, reject if p too small.
- shapiro.test ()
- hist ()
- qqnorm ()
- qqline ()
- Null hypothesis is that it is normal, reject if p too small.
- ks.test(K, “pnorm”, mean = mean(K), sd = sd(K))
- library (nortest)
- ad.test ()