In most cases, especially if you are a fresh grad or are applying for a job in a new industry, you might be clueless as to the standard rates in your industry. Unlike job descriptions, this may not be as easy to research since this may be based on a number of factors. Try to do some research on similar positions in the same company and other companies in the same industry.

Be realistic. If you're applying for an entry level position, don't assume you'll receive a salary significantly over minimum wage. If you're really unsure, consider how much you need, because at the very least, you should be able to afford to support yourself with any job. Although you may not want to name your price, an interviewer may ask for it point blank. In this case, you should give your higher salary expectation (as long as this is not unreasonably high-a distinction you may need some trial and error to make) but add that this is negotiable. Try not to give your "last price" because this is almost always what the company will take.