EXHIBIT 11 JONES APPAREL GROUP, INC. Computation of Basic and Diluted Earnings per Share (In thousands except per share amounts) For the Quarter Ended For the Nine Months Ended -------------------------- -------------------------- September 27, September 28, September 27, September 28, 1998 1997<F1> 1998 1997<F1> ------------ ------------ ------------ ------------ Basic Earnings per Share: - ------------------------- Net income................ $59,098 $48,938 $122,746 $97,758 ======== ======= ======== ======= Weighted average number of shares outstanding........ 100,886 104,372 100,821 104,124 ======== ======= ======= ======= Basic earnings per share.. $0.59 $0.47 $1.22 $0.94 ======== ======= ======= ======= Diluted Earnings per Share: - --------------------------- Net income................ $59,098 $48,938 $122,746 $97,758 ======== ======= ======== ======= Weighted average number of shares outstanding........ 100,886 104,372 100,821 104,124 Assumed issuances under exercise of stock options. 3,540 4,262 3,792 4,060 -------- ------- ------- ------- 104,426 108,634 104,613 108,184 ======== ======= ======= ======= Diluted earnings per share $0.57 $0.45 $1.17 $0.90 ======== ======= ======= ======= <F1> Adjusted for 2-for-1 stock split effective June 28, 1998.