Range

The range is the difference between the largest and smallest value of a data set.

Mode

The mode refers to the value(s) which occur(s) most frequently. 

Mean

The mean for a set of data is the average of the data set. Let’s consider the scores for 10 students in a Mathematics test in which each student obtained a different score. The mean for these students is the score that each student should have received if the overall class total was shared evenly among the students.