Step 1: Recall the mode definition and look at the given information

MODE: The number which appears most often in a set of numbers.

or

Mode is the frequently occurring observation in a data.

GIVEN: 20, 14, 12, 14, 26, 16, 18, 19, 14

Step 2: Arrange the data in either ascending order or descending order

Ascending order:

12, 14, 14, 14, 16, 18, 19 , 20, 26

Step 3: Count how many times each number appears.

12 - 1 time

14 - 3 times

16 - 1 time

18 - 1 time

19, 20, 26 - each 1 time

The number that appears most often is 14.

The mode of the numbers = 14