The Brainliest Answer!
Mean refers to the number of values in the data set and then divide by the number of values you added.
Median refers to the middle term. Arreange the values of data set in ascending order and then identify which value appears in the middle.
Mode refers to the frequency of values that occur more often in the data set .

Hope it as helpful :) 
2 5 2
you forgot range
range is just the difference between the largest and the smallest values
but still
umm...den dont know the meaning in detail...but i helped uh in short wat actually it iz