例13-1NYSE佣金率趋势 Table 13-1 Commission rate trends, New York Stock Exchange, April 1975-December 1978 X2 April 1975 45.7000027.6000015.00000 368000021.3000012.10000 34.50000204000011.50000 December 31.9000018.90000 1040000 March197650.30000338000019000010.80000 5000000334000019.5000 10.90000 46.7000031.10000184000 1020000 December47000003120000176000 10.00000 March19774.30000288000016.000009.800000 437000028.1000015.500009.700000 September404000026100001009.1000 14.000008900000 March1978402000025000013.900008.100000 43.1000027000014400008.500000 42.5000026900001440000 8.700000 40.70000 24.5000 13.70000 7.800000 Standard Name n Mean deviation Variance Minimum Maximum X11 5501630268 为 37234 27.600 X1610.0941783431806 Notes: X,= Commission rate, cents per share for 0 to 199 shares) X2=Commission rate, cents per share (for 200 to 299 shares) Commission rate, cents per share (for 1000 to 9999 shares) Xa=Commission rate, cents per share(for 10,000 Source: S Tinic and R West, The Securties Industry Unde Brokerage Commissions: Changes in the Structure and Perforn 13- Member Firms,The Bel oumalof Economcs, vol 11, no. 113-6 例13-1 NYSE佣金率趋势 Table 13-1 Commission rate trends, New York Stock Exchange, April 1975-December 1978