Any argument which is intended to give some support,
but not definitive support for the conclusion.
An important characteristic of inductive arguments is that it
is always possible to have an argument where the premises are true,
but the conclusion is false. One hopes that the conclusion is true,
but it might not be.
Probability is always a factor with inductive arguments. The certainty
of the conclusion being true is always less than 100%.
All the presidents of the United States have been men.
Therefore, it is likely that the next president will be a man.
The premise in this argument is true. However, it is easy to see
that it is possible that a woman will be the next president. So,
even though the premise is true, it is possible for the conclusion
to be false.
75% of potential voters polled say they are voting for
Donaldson. Therefore, it is likely that Donaldson will win.
The premise deals with statistics, in this case a sample of voters.
It is always possible that something went wrong with the poll,
so it is not certain that Donaldson will win.
When the premises are used as a base from which the conclusion
makes a projection, then the argument is inductive.
Remember, all inductive arguments are (deductively) invalid. (see