Every science defines itself by its object and its method.
The object of economy is the economy, meaning the production, the distribution and the consomption of the goods and services.
The method of economy is linked to the different laws and so many mecanisms that rule the economic activities. It is an original method that make the economists themselves very o riginal!
A lot of people think that the economic method is like mathematics. I consider that this is an error. It is true that the economist will use a lot of data and amybe a mathematical model, like other sciences, but an economic study may also be very scientific without any data, just plain text; usually, the data would help to understand the details.
Let's see now some caracteristics of the economists and their science: