this question is being asked and i can't understand what it means. I am not sure if it is referencing chebyshev's theorem. i am not sure if i am supposed to go the website . i just can't get a toehold in to even begin answering the question.

the question:

The U.S. Department of Labor annually publishes an Occupational Outlook Handbook, which reports the job outlook, working conditions, and earnings for thousands of different occupations. The handbook reports both the mean and median annual earnings. For most occupations, which is larger, the mean or the median? Why do you think so? Which do you think is a better measure of central tendency? [3 sentences]