Statistics
It is the middle number in a set of values when those values are arranged from smallest to largest.
MEDIAN
It is the number you get by dividing the sum of a set of values by the number of values in the set.
MEAN
It is also known as fish bowl method.
SIMPLE RANDOM SAMPLING
A type of source that provides first- hand account of an event or time period and considered to be authoritative.
PRIMARY SOURCE
It is a measurement of how values in a sample set or data set are spaced apart.
RANGE