In the formula for calculating the standard deviation,what does the Greek letter Σ represent?

A) summation
B) sample size
C) mean score for group
D) individual scores

Summation

The process of adding together a sequence of numbers or other quantities to find their total.

Standard Deviation

A measure of the amount of variation or dispersion in a set of values, indicating how spread out the values are.

Greek Letter

Symbols used in mathematics, science, and engineering to denote variables, constants, and special functions.