Answer:
12
Step-by-step explanation:
The mean is the average of a set of data. To find the mean you would add all of the values and then divide by the amount of values you have.
The values on the chart are: 12,13,14,9
There are 4 bars on the chart, and 4 values.
12+13+14+9 = 48
then you'd divide: 48/4
12 is your mean.
