Step-by-step explanation
Given the following data
Re- arranging the data in an ascending order
We have the following data
20, 17, 4, 20, 19
The number of the data = 5
Mean = sum of the data / number of the data
Mean = 20 + 17 + 4 + 20 + 19 / 5
Sum of the data = 20 + 17 + 4 + 20 + 19
Sum of the data = 70
Mean = 70/5
Mean = 14