Find the standard deviation for the following frequency tables using the formula. Grade Frequency a. b. C. 49.5-59.5 2 59.5-69.5 3 69.5-79.5 8 79.5-89.5 12 89.5-99.5 4.06 5 Daily Low Temperature Frequency 22 49.5-59.5 53 59.5-69.5 32 69.5-79.5 15 79.5-89.5 1 89.5-99.5 0 Points per Game Frequency 12 49.5-59.5 14 59.5-69.5 32 69.5-79.5 32 79.5-89.5 23 89.5-99.5 2