Final answer:
The median annual earning from Chelsi's artist friends is $6,700, which is identified by arranging the earnings in ascending order and selecting the middle value.
Step-by-step explanation:
Based on the information provided by Chelsi, who has gathered annual earnings data from her artist friends, we need to find out the median value of the data set. The annual earnings from seven people are: $1,500, $6,700, $2,200, $8,100, $50,000, $12,000, $2,200. First, we need to arrange these values in ascending order: $1,500, $2,200, $2,200, $6,700, $8,100, $12,000, $50,000.
Now, we find the median by locating the middle value in this ordered list. Given that there are seven numbers, the fourth number will be the median, as it is in the middle, with three numbers on each side. Looking at the ordered list, the fourth number is $6,700, which is the median income among Chelsi's artist friends.