Sameer - what do you mean by drawing the Given_data on x axis as red points and Obtained_data on y axis as blue points? If you want to plot both on the same set of axes in different colours, just do
figure;
plot(Given_data,'b.'); % plot in blue points
hold on;
plot(Obtained_data,'r.'); % plot in red points
The above will plot both sets of data points on the same axes in blue and red as required.
