10 test scores were randomly selected from a Statistics course and the following results were obtained. Find the mean:	74,73,77,77,71,68,77,67,66,65 _____ _____ = _________
Finding the Variance Take each number and subtract it from the mean then square the difference add your answers then divide by n-1	( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ( ___ - ___) = (___) = ____ ____ _____ = _________
Find the Standard Deviation Find the Square Root of the Variance	__________