AVG returns the average value of the elements in an array.

function AVG(X, Y [, ...]: Number): Number;

For example, AVG(2, 4, 9)=5

SUM returns the sum of the elements in an array.

function SUM(X, Y [, ...]: Number): Number;

For example, SUM(2, 4, 9)=15

COUNT returns the number of parameters in an array.

function COUNT(X, Y [, ...]: Number): Number;

For example, COUNT(2, 4, 9)=3

MAX returns the greater of numeric values.

function MAX(X, Y [, ...]: Number): Number;

For example, MAX(2, 4, 9)=9

MIN returns the lesser of numeric values.

function MIN(X, Y [, ...]: Number): Number;

For example, MIN(2, 4, 9)=2