The mean of the data is 15 all you gotta do is add all the number up and divide by the numbers added
It’s a
Step by step to cool to be true
Answer:

Step-by-step explanation:
i)
A column is going from top to bottom
Answer:
9.5 = n
Step-by-step explanation:
6.5 = -3 + n
+3 +3 Add 3 to both sides
9.5 = n
If this answer is correct, please make me Brainliest!