Answer:
15
Step-by-step explanation: you have to add all of the numbers and then divide the answer by the number of numers you added
Explanation:
mean means add all the numbers and divide them by how many there are
plot 1: 63 divided by 9 equals 7
plot 2: 330 divided by 15 equals 22
so now we need to subtract 22 minus 7 equals 15
hope this helps
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