Most of the people think that Economics just based on complicated Tables, Charts, Numbers and Statistics, but basially it is the study of Rational Human Behaviour, So we can say that it is a Social Science which also guide us How we can use the scarce Resources in order to fulfill our needs and wants.
According to Economics people have rational behaviour and they want to fulfill their unlimited wants and needs. So, Economics examines the behaviour of people according to their self interst
So, On the one hand Economics is the study of Wealth and on the other hand it is the study of Man.