# Required fxn: 'RE'

newton=read.csv('http://webpages.uidaho.edu/~renaes/Data/calculus%20class.csv',header=T)
oranges=read.csv('http://webpages.uidaho.edu/~renaes/Data/orange%20sugar.csv',header=T)
msa=read.csv('http://webpages.uidaho.edu/~renaes/Data/msa%20housing.csv',header=T)

# housekeeping to make coding easier
x1=newton$test; y1=newton$finalgrade; mux1=52; n1=10; N1=486
x2=oranges$weight; y2=oranges$sugar; taux2=1800; n2=10; #N2=?
x3=msa$mnth1994; y3=msa$mnth2002; mux3=700; n3=13; N3=47

RE('newton',x1,y1,'ratio','regr')
RE('oranges',x2,y2,'srs','regr')
RE('msa',x3,y3,'regr','diff')