function c = Q11
abc12=Q1(1,2);
abc13=Q1(1,3);
abc14=Q1(1,4);
abc24=Q1(2,4);
abc23=Q1(2,3);
abc34=Q1(3,4);
var(abc12(:,1));
var(abc12(:,2));
cov(abc12(:,1),abc12(:,2))
cc12=corrcoef(abc12)
cov(abc12(:,1),abc12(:,2))/var(abc12(:,1))/var(abc12(:,2));
var(abc13(:,1));
var(abc13(:,2));
cov(abc13(:,1),abc13(:,2))
cc13=corrcoef(abc13)
cov(abc13(:,1),abc13(:,2))/var(abc13(:,1))/var(abc13(:,2));
var(abc14(:,1));
var(abc14(:,2));
cov(abc14(:,1),abc14(:,2))
corrcoef(abc14)
cov(abc14(:,1),abc14(:,2))/var(abc14(:,1))/var(abc14(:,2));
var(abc23(:,1));
var(abc23(:,2));
cov(abc23(:,1),abc23(:,2))
corrcoef(abc23)
cov(abc23(:,1),abc23(:,2))/var(abc23(:,1))/var(abc23(:,2));
var(abc24(:,1));
var(abc24(:,2));
cov(abc24(:,1),abc24(:,2))
corrcoef(abc24)
cov(abc24(:,1),abc24(:,2))/var(abc24(:,1))/var(abc24(:,2));
var(abc34(:,1));
var(abc34(:,2));
cov(abc34(:,1),abc34(:,2))
corrcoef(abc34)
cov(abc34(:,1),abc34(:,2))/var(abc34(:,1))/var(abc34(:,2));
clc