Correct Answer - Option 3 : 25

**Given:**

The given data,

21, 24, 25, 33, 28, and 19

**Formula used:**

Mean = Sum of numbers / Number of observations

**Calculations:**

Sum of numbers = 21 + 24 + 25 + 33 + 28 + 19

Sum = 150

Mean = 150/6

**∴**** The mean of the given set of numbers is 25**