The average time taken by each student to complete a project is given by:
A. the mean.
The mean of a data-set is given by the sum of all observations in the data-set divided by the number of observations.
The average time has to include all students, which excludes the median(50th percentile) and the mode(most common value), hence option a is correct.
More can be learned about the mean of a data-set at https://brainly.com/question/24628525
#SPJ1
