Executar reg(L1,L2) para traçar a regressão linear a partir dos dados das listas L1 e L2. Para que o exemplo funcione, introduza reg().
from matplotlib.pyplot import * x=[56,42,72,36,63,47,55,49,38,42,68,60] y=[136,132,136,130,138,132,136,130,142,134,136,140] def moy(L): return sum(L)/len(L) def cov(L1,L2): res=0 for i in range(len(L1)): res=res+(L1[i]-moy(L1))*(L2[i]-moy(L2)) return res/len(L1) def reg(L1=x,L2=y): a=cov(L1,L2)/cov(L1,L1) b=moy(L2)-a*moy(L1) X=[t for t in range(100)] Y=[a*t+b for t in X] plot(X,Y) scatter(L1,L2) grid() axis((min(L1),max(L1),min(L2),max(L2))) show()