pverall frequency response

data = [
     2.994 3.031 0.7187;
     10 3.031 2.156;
    100 3.031 2.969;
    9980 3.031 1.25
    ];
freq = data(:,1);
response = data(:,3)./data(:,2);
semilogx(freq,response,'o-');
xlabel('freq');
ylabel('response');