The box plot displays the grades (out of 30) that 26 students received on a quiz. A box plot. A number line labeled quiz grades goes from 12 to 30. Points are at 12, 14, 15, and 16. The whiskers range from 20 to 30, and the box ranges from 23 to 27. A line divides the box at 25.

Which of the following statements is false?

The distribution of quiz grades is skewed left.
The distribution of quiz grades has an IQR of 4.
The distribution of quiz grades has four outliers.
The distribution of quiz grades has a center around 21.