can you please help with question 1 and 2

Question 1: A stock had annual retums of 10 percent, 5 percent, 14 percent, 16 percent, 11 percent. & 12 percent each for the past six years. What is the average retum and standard deviation for this stock? Retum Year 1 2 3 4 5 6 + Average retum Standard deviation Question 2: A stock had annual retums of -10 percent, 5 percent, o percent, 16 percent, 25 percent, and 50 percent each for the past six years. What is the average retum and standard deviation for this stock? Retum Year 1 2 3 4 5 6 Average return Standard deviation