Answer:
10
Explanation:
When you think of the mean of a data set, think of the word average. 'Mean' and 'average' are the same thing when you're talking about a set of data.
To find the mean, you have to divide the sum of all values in your data set, by the number of values.
7 + 9 + 10 + 11 + 11 + 12 = 60
60/6 = 10
Therefore, the mean of this data set would be 10.