Use the following dot plot to answer the questions. What is the mean of the set?

If an additional dot is added to the set in the 3 column, how will the mean change? What will the new mean be?

The mean is 12.75

if we add one more dot to column 3, the new mean would be 13.5
the mean changes based on how many dots there are in this problem.

(median= sum of all numbers/ # of numbers)

brainliest???