The table below shows the prices for SPY (S&P 500 Market Index ETF) and BRK (Berkshire Hathaway) BRK $94.05 $93.42 $105.88 $91.06 $97.01 $93.44 $101.85 $103.70 $111.09 $111.57 $108.60 $114.40 $119.86 How much of the variation in Berkshire's returns are explained by the market (SPY)? SPY $186.98 $186.83 $198.37 $200.18 $203.59 $203.24 $211.74 $212.00 $210.94 $208.33 $216.01 $219.10 $224.33 10/1/16 12/1/16