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

Arranging the data in an ascending order, we get,

14, 14, 14, 14, 17, 18, 18, 18, 22, 23, 25, 28

It can be observed that 14 has the highest frequency, i.e. 4, in the given data.

Therefore, mode of the given data is 14.