Nancy owns a temporary employment agency in Canmore, Alberta. She has 12 employees she hires out for a variety of jobs. The following tables shows the number of hours her employees worked over the past nine weeks.

Week: One Two Three Four Five Six Seven Eight Nine

Hours: 220 310 270 360 280 300 270 290 320

What is the average number of hours she can bill per week?

What is the average number of hours each employee works per week?

Is there a mode? If so, what is it? Is it a reasonable measure of central tendency for this data?