/*
Pearson
Spearman

Listwise (casewise) deletion
Pairwise deletion
*/

use https://stats.idre.ucla.edu/stat/stata/notes/hsb2

*****************************
*Pearson Correlation 		*
*****************************
corr read write math science ses female

pwcorr read write math science ses female

pwcorr read write math science ses female,obs

pwcorr read write math science ses female,obs listwise

pwcorr read write math science ses female,sig

pwcorr read write math science ses female,sig star(5)

pwcorr read write math science ses female, print(10)


//Significance level adjustment bonferroni or Sidak 
pwcorr read write math science ses female, sig bonferroni


**********************
*Spearman Correlation* 
**********************
sysuse auto
egen rprice=rank(price)
egen rweight=rank(weight)
sort price
corr price weight
corr rprice rweight
spearman price weight