Find the frequency of 40 in the following given set of data. 10, 40, 80, 90, 60, 40, 30, 40, 20, 40, 80, 70, 40
The frequency of 40 in the following given set of data.
10, 40, 80, 100, 60, 40, 30, 40, 20, 40 is .