Answer:
17
Step-by-step explanation:
To find the mean of a data set, you add all of the values together, then divide by how many values there are in the set. Lets break this down into a few steps:
- 1: Add all of the numbers together
15+16+15+13+19+20+21= 119
- 2:Divide that number by how many numbers are in the set
There are 7 numbers in this set, so 119÷7=17
So the mean weight of the fish is 17
