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Scientists like to be both accurate and precise when conducting their experiments. But what does that mean? you might ask, because they are not the same thing.
Accuracy: You can be accurate every time you do an experiment even though there might be multiple errors in the way the experiment was conducted. Thus, for the inaccurate method, your result is accurate, but it is not precise.
Precision: When scientists perform an experiment multiple times, with no errors in its method, and they receive similar results, they are precise. In other words, although they didn't hit the bull's eye (i.e. they weren't accurate), they were somewhat close to the actual result and thus precise.
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