Answer: Â Â arithmetic Average Return =11.33%
         Geometric Average Return=10.33%
Explanation:
Returns per year
Year 1 Â Â Â 16%
year 2 Â Â Â 23%
year 3 Â Â Â 15
year 4 Â Â Â -11% Â
year 5 Â Â 30 %
year 6 Â Â Â -5%
Total = Â Â 68%
Arithmetic Average = Total returns 0f ( year 1 -6) / number of years
= 68%/6 =11.33%
Geometric Average Return  is given as
= ((1 + R1) × (1 + R2) × ... × (1 +Rn))(1/n) - 1
((1 + 16%) × (1 + (23%)) × (1 + 15%) x (1+ -11%) x (1+30%)  x (1+ -5%))^1/6 - 1
((1.16 x 1.23 x 1.15 x 0.89 x 1.30 Â x (0.95)) ^1/6
((1.16 x 1.23 x 1.15 x 0.89 x 1.30 Â x 0.95)) ^1/6 -1
(1.8035073 )^1/6 Â - 1
= 1.10328 -1 = 0.10328 x 100 = 10.328% Â =10.33%