Over the past $4$ years, returs for the IC Company have been: $30\%,0\%,-8\%,$ and $0\%$ and returs for the S&P $500$ Index have been $17\%,20\%,7\%,5\%.$ What are the average returns ofIC and the S&P $500$ index? What is the correlation between the returns on IC and the S&P$500?$