Find the mode of 14, 25, 14, 28, 18, 17, 18, 14, 23, 22, 14, 18.

Arranging the data in ascending order:
14, 14, 14, 14, 17, 18, 18, 18, 22, 23, 25, 28
Mode is the observation having maximum frequency. Here, the number 14 occurs maximum (4) times.
Hence, the mode of the observations is 14.