Sociology is a science every bit as much as biology or chemistry. Social sciences, like natural and biological sciences, use a vigorous methodology. This means that a social scientist clearly states the problems he or she is interested in and clearly spells out how he or she arrives at their conclusions. Generally, social scientistsground the procedure in a body of existing literature. This is precisely how other sciences function.
So, sociology is a science which attempts the interpretive understanding of social action in order thereby to arrive at a causal explanation of its course and effects.