X Sorry, that's not correct. To find the volatility, first find the variance for each stock using the following formula: Then use the following formula to find the volatility (standard deviation): SD(R) Var(R) OK Month Cola Co. 1.80% 4.20% 1.23% 3.40% 1.90% 070% 6.30% 0.50% 0.1 0% 1.90% 0.50% 4.20% Gas Co 2.00% 1.50% 6.90% 070% 9.00% 1.30% 2.30% 8.10% 0.00% 2.90% 5.60% 0.20% January February March April June July August September October November December