Find the arithmetic average return AND geometric average return for the following data of SP 500.

Data for this Date Range Aug. 31, 2016 July 31, 2016 June 30, 2016 May 31, 2016 April 30, 2016 March 31, 2016 Feb. 29, 2016 Jan. 31, 2016 Source: Ycharts.com -0.12% 3.56% 0.09% 1.53% 0.27% 6.60% -0.41% -5.07%