Notation:
Set intersection of two sets A and B denoted by A ∩ B is the subset of A or B that contains all elements that are in both A and B, i.e. A ∩ B := { x : x in A and x in B}.
Set union of two sets A and B denoted by A ∪ B is the set that contains precisely the elements that are in A or in B, i.e A ∪ B := { x : x in A or x in B}.
Set difference of the two sets A and B denoted by A – B or A\B is the subset of A that contains all elements in A that are not in B, i.e. A – B := { x : x in A and x not in B}.
Summation symbol ∑ represents the sum of all members over the set, e.g.:
Definitions and terms:
- Population: A set of the similar data or items subject to the analysis.
- Sample: A subset of the population.
- Arithmetic mean (average) of a set: The sum of all the values in the set divided by the size of the set
- Median...