Question 8 3 points Save Answe Look up the internet or my lecture note for the basic statistics (not the special edition for the quality management.), how is a variance being measured? (Think about the meaning of the variance by doing this problem.) Sum of the deviations between the mean and each observation Sum of the deviations between the mean and each group mean O Squared sum of the deviation between the mean and each observation Sum of squared deviation between the mean and each observation