Sector ETF-> Benchmark Benchmark weights (Wsb) ETFs Returns (Rsb) Stocks Holding Weights (Wsh) Holdings Returns (Rsh) Financials XLF 0.30 3.40% C, etc. 0.33 3.80% Healthcare XLV 0.40 2.10% KLH, etc. 0.33 1.90% Cons. Staples XLP 0.30 4.50% KO, etc. 0.34 5.20% Benchmark (R tot b) 3.21% Portfolio (R tot p) 3.65% Difference 0.44% Based on the table above calculate Security Selection attribution for the Financials sector 0 -0.21% 0.12% O 0.03% O 0.08%