%input your own vectors of C and K
Cvec=[0.89710; 1.04680; 0.90619; 0.89321; 1.63440; 0.86776; 0.78324; 1.03730];
Kvec=[1526.9; 1526.8; 1528.3; 1530.2; 1518.7; 1527.0; 1531.4; 1533.0];

%standard deviations and variances
std(Cvec)
std(Kvec)

var(Cvec)
var(Kvec)