CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="390"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "www.researchgate.net",cType: 'managed',cRay: '9157c76f3b03402f',cH: 'puoat8ewqgn3XzypCZJTSBkspu41YhJxgLUALeb5yt0-1740151841-1.2.1.1-zwaHVZYTVgHDg0FOfyIyJUwoV0aP_zJMbOaOpn.bpFCIeKHOMNYwW4AZii6n1TG.',cUPMDTk: "\/publication\/225588740_A_new_statistical_process_control_method_to_monitor_and_diagnose_bivariate_normal_mean_vectors_and_covariance_matrices_simultaneously?__cf_chl_tk=GN63yo1lzkNgoxgqwQJsddeNhTTv1Bp.8p.QH5hSg.Y-1740151841-1.0.1.1-6RUA_8YYOd1gZypxJqt5hL_im0JIp4fwg3pd6tM82Rc",cFPWv: 'b',cITimeS: '1740151841',cTTimeMs: '1000',cMTimeMs: '390000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/publication\/225588740_A_new_statistical_process_control_method_to_monitor_and_diagnose_bivariate_normal_mean_vectors_and_covariance_matrices_simultaneously?__cf_chl_f_tk=GN63yo1lzkNgoxgqwQJsddeNhTTv1Bp.8p.QH5hSg.Y-1740151841-1.0.1.1-6RUA_8YYOd1gZypxJqt5hL_im0JIp4fwg3pd6tM82Rc",md: "vxxScJoQbKF004jGReaS8z1rbRCF8CDpV55wKlWw.tY-1740151841-1.2.1.1-MfnhQs4x.Q3l8SDIIDGBTB8AS7xWuuAl4qM2Vn0IL5IlrhlD1jhBeurWScnM7tnjfmEffzSUGetUFSpta0Daud4H8jnHat2qqq1ZoBgwsKMLg0F8KsWaDUPLgdJhncghF1a2t.WmYV3oW71L_bhIUgl3gcPZvjKZ70PaB7UPMrT7o6m2KT4JGzmrw0rjVDXwK6cE_5ASZ5JXocNS.GuUJozZYIdwRTroneMG0ll_1hm8GYq4dG6c3gv6K4gHxPwLtYeeFH_WHMpmDnVx3984R7k8xf7Q0g_qSm1iXjy9rHJR6zrzeE6fvS8VLTsoxWNPYAmri9RtRKycYBgKZ90qxjOhLe2adGSB.HQ43o8RjI1oUjvUZ3u5I.wBGOWjikcUyenMrOoX3bBiFHoNd1NgyQx0lUKEHPlWH0taF4RPDKnjt7aJu8iUu1oSXe8SGXPotF7O9.hJXPQIrlDYp7EgE3I2bEslyfmWmvTvPrh5XlG5cZNuc0nuhTH55O67JeOF5mpoEEGPI7aMqAVMaG4Qp0M2yG684f7P2fzVDEofUMqJrLSA5MxR_KD.h.afFYDmgAQj9t05xAtKq5J.UydalsW_BAsBM0h8rS0wrCpBCn0jaxVOI_U20kQzf8vESiDztHhpaD0RwNhIJUm04yMIAB1ha2GhMgU01R5nFovxz3r8JXnr8DfhD4KU46HxV3xLmuy4RWyWB1dmY9PcUkhEZt3b2uDo58trpH33H2OktYvv2XnFrSg8QPq2TfhpLf0JuYWvjeuhzX3B_7f9onALiz895tHwZkoRmjY1NKC.sCu2hPzHhggB_nYHo12L0kVZTZTNe3CPW4f6IlCJN6IYUb47FO_BDHPab2iDXF3Y4N7zSKpsCMTLwEBjkgFTUQFSlx6UGrK.MTlj5L4Xv6BpjNEmZ.EXmpBMqED6nc38KqYCIZFLfjSNJ7NKTB20dWzARS5OQyHrmkZeEY8s6XbyJn3fLJryy4gJ2.IfhBddiO.fVczqxeZBxFd1LIzv0YmrQQbQjkPf6hfWIC3jMdTCZ0vofF7RQOkGw_eYdBgSAJuKn9KD3bWsklxY7mROYZqCv.zQJPPvGuJMaNQTP3yZHKucSASck7iTcDQ2tgBWBNC7T0pKUT6iJLCTGlu8DCViyX60rUq53CHyr_OQmhvZ3I8PvS_WovSXxRdy7_YRAc6UJ7oYgUydqLt.gSOizil1dgpjXe2oGBe2YWqMxihQSMpwIPLj5TJZXhNvTFqEZeklljR7JhykNsCKp6cL5fnfzHKJX1XvaqaqI10l_B_zoQ4.Pi_Uag0YK15u7519_4AOX1zvTxb0ANSvYyjrkolMtHiOx_iPwnucD87pTOaSWwXw9xo8n3sentGq3oBUhvnJ6pb1eBxnBnrwODx4jNlhexf2MX.Ad2T1emwaCdG6lYstRW6OfkoFkbc7vqW3pIxkRpsx14lWMIvA_FkmoRQE0T3JmyHhZ6_JP.xpEHWZFW4od3O_hwovM7Nx3wK.iuyX4bj3WncTVGca2.XmkP96GtZC52HuJaDZhcXS9RQLtteJ1hGsktp.8TtZfPhxRU9hnHPrLk0AhZkTUmJoyzqc0Ccl_5lkORJTb.kbTwxVX3KUdr9UlmTS7bD6gcpWNhs52pnQTwynGb9dpIN1k8cVlxNCtLxxbRjen244x7hWf8pSUQkF_f8S7E9.Wpm9zYiO3zQK75zq_KLTmmeKFXjQ5qJiuTAxvtun1MvRNQ3LJDXzS5C7NeCrc.zL3iwb4WQIpk5dB4cYUwgyyh1ARbemB_Az7MQw9YQWxu8W3fAb4yFWOmSo05VqEG0fp4VGVoy.mZpOdgzv9FoVoX0MUqo2QmbEHYMKkFHKhYt8Cy.i96vBkSSWAGyB3HNf8txbZz3nqke6kSQKSKjdOVEGz7xl3lVfcsLRqwqOx4.NTPwH68u1BU9cn024fLgVsjd_VcisqaImwI8t5zgwgmPYPpOL.X3ONH3FkgdjoyTPO2Jrxe.MHMiFC6dI3pU.VWQr3Hd9bAk_w7iN0plyE7RqLzBOvXATCT2tzkHmwtvZT1lcSZZYy0pi7tcXcah1mD2MHlL7lTMo_QsXUcCZBAi7Nrix_IcLHupWH9pdedVwelVUFNUCLrBNr_p4.L92E9TsWpj.29sS5YyK0u.b.ALjCE15wEAJ_JHTcu8oYDBYalKNg3fneghWlJMFbA.cDn6XMpYs70X7OFA01gJD7UU921fWt64dKNO1aEGfl7o4UKOJSpq76wtQDgoZhWLKfN_SI44QnIpJ7pUVB8hxIWIaWPjRdYaQGIueHWQWJRLH4VCTnWfN2ICarfjYlwg1g4czw3eGrcknnYkTg3XTJeaJbwQjvnxYYwLfFgZ2fNaWS7OazcBebBzDHyZR2TGMNU6aflIgzGQI3abyUTFfrBhUi.cqwGiAmpl9_.yG6SmSVyBYfOkOeqhUlcYzdemZlwui4rtx0jpbS3JbJepEjr.6f9cb2j_jhG.LTBlvJMvDBujM74bPISb.DnqcG4gA0DyzKiKq1tYkDkIrYiMLojCk9Bxv0dMXaso4MyoLRa0XPTPPOKsUzBXZNdB1HfjOwntfMVUsmmqKDXLbeYDYhG7UplKcVI7tsGSi4AiAYN7rZUfIVXgK5YIDqfhdoijtljaeN6KG8x_IHpS15oiTHeoR2n5znxbWcPwMv0MS26Onek1faVcPzlJiSFE0pZpI8o7_3YfNT446dNJS2Vcsp2HfZhvchdWRKaHUCo0s818OOeE.L6TB8n2bgOBQGpfa4nZobq0uK8n_lJ84A4ZGTfM4VjWLspD6t._LgRFV_WKd6BT5GLZJ8NpcBP68dNpM.zNFJweXmRL9kE1BG8prG3FEKNMar9P9re9pU3dG3t.9N03aW2z_9hz0rnPwI3d23hzr8RSU1dxYqiWyekNpWpzmA_ADNFeQlRthxzL_9iyIb9TVDS_ceX2.fpGS4i6ZQXi0Afo",mdrd: "ZjLGInkY6yY_.0i2MUkYqEze4mAYkRfN8BR0_6AwVA4-1740151841-1.2.1.1-4pUGTlvxESSbt9fRqfTxgZhabTIYCo_tJhEKxeLW9pGi2boECXq1KKew5BBG5kr4vpBQVkxhjHba1QGANVo8E3HPqndyquQ6n.NKSk2tBvLCp1bYRupHLl2m624vmbt_R13XFjlwq_7QHpedcJb0DF8FdCeWX0aknoZHRZE9s.hv_ERDudQ2N9AEdClegbvwHfcTSxEx6CgKq5HFbQBBBkSIR1y842CoItvJWRe_5L3IQeh_VP76IHO8hZSpLeTGyOJPL.WyfEE2fZ1iL7x7W0FUibYER5DQMW1GFouhpwGQ_UZfDXYTqSk9KFOeVDmY4cs7zUNFklhUerlRsFH5j3lMfE7QAyUvtDy5Q8YIabXs5EvQi_RL2ZMkvHFl_0YH3jtvS0SO9uAdUu.cTLwTV0YnGEVJNxKgycAL9r54QTHh2fcyGL7yivyADiDRJiYyEwkapvmL_X_Wi2JxU.kpTpaIW8ulOJut4IFI4oIAQWu0p8T2IT0.Hw.qVZP_lBqVxCuaEEc5zVuCgTyIsUqBSqgG1LNPEXTajFF7V1KinsRXFYAFvbsdohPSL1ZgPlD3Xk4_XbOIKALM7pzug0b5yRtTj9b9spYuCTnI7TyiR5VB48tOeWGbh6ojD1xZ6_3ljWP8lcY9MWDcNQ8fFrplhjSqPOMrJoQF1457_EYotB8dfMdoKnHLZb0BXniIKf60tU6xQHomppNKOO5CZfx..FU9ieH9E2mPta6C45pkXe._wNpkhjp4RzsIVbE7JA95oBd3bHEed.EI7wGJAAIUFSwoaOUTBSLSbqSKSAyzI3gNFoIQ1lRrG1YUXwhoVnGpvkDZfBmwAqmGmQh5ENJTyDEKY8lMqs_Y1G425UxGyB0j8YysFdd2sxah54hjYppVkZEFxOCnZQ9lmfN556DGMvb4eisZiczQYYPpF2NQKjeeTV..j4wUyND5NZhVC2ZxJzEAGCkNqnw_6lsdiD9F.xhhTa36ZwXXRJXj9bJlXinZ6o2VEahty6QlDnOum12OneArbKzs5LTycVvEYTvTa_kc_ayVlUYemtrH6dDc7P8IJ6N_w2Pct0_H6OLv_z_4cDt0.ET.JZ_v3SM7bLWGLmK0fv6yH3VTp0oavBUfYsPnyMPynRREUFuOuUiZhk.bRgea0iHBfSeTzaOXXhZy2N2Q0IYIYJ1j3k79wuB0itAAEb_2BuhrnmpjQ1BJNZ0FsjDhUPb_ChhhgvXEOvu52klC7Bmys3GMFSuBVCwYpIpZ6IMpIO7MBJfQpv3jyfoVf_1aVHMI7HVYBUOSMSfnz53xB6Q5OXmpjJ7WkC1_kRzuRAWKQeXS8bh6XZ4vIrccSio2uiiM9TC7JvuaVDDm1hUigrmjoDjjBtL9xnUXzF4xqeIJx69J2zlUKwFSGfP2ApQdWT2z382MifyFMpxaA8ZSwLvywNl7Nsaw8j.KoHzq3tAyqO3K8ecEkREzW2Yh7iDcAL6IEe07zpPBYHVInLsXOE_xau5WU0cRfUBzPptxrVVJypiXdH7YLJOR4H_YRKtRll1_sJynUUP5SiquJtzNq39dVggphoE4D_Xzbfs0qVXYtmKj.BsMHpnf1GdJ3ix7YyQRuTkAfaJpSdnjRNLCzVOUWRzaf2UzAAuPnfvEpccoB1U8eZqwoT5lv_p.dI9TegNR.Mvu3zLKfqWt_IlvKlw6pWe7l6dRlVtzvroxbHg9.lR6BxV04pUPkabFViJeqn6BjSj0ypq9oRQYC9ZryKFHEIapm_JnYMe2H3i3L3_TN9ZNziu9qh4MR9EdR0QI2.kk7us7ZC3V2DUlnjvw3Ih0Nq1_jvzs7rZ66enzpmcgr7kMZqL37N7x2FW3SXumw2Cc.oXmSZlaTCyjojOqWIHdWld84kw0HyGbC2FgDKdrRGfV3mNRl6u1gbvoGNH2bOzsQglwMJ7HuJzNoYy68JGvsFSAQeaKV5X0WdF2xM8FdKl3tEZEDYm3u52L7NE95mnGm9Ps0H7w_qhi9Q"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9157c76f3b03402f';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/publication\/225588740_A_new_statistical_process_control_method_to_monitor_and_diagnose_bivariate_normal_mean_vectors_and_covariance_matrices_simultaneously?__cf_chl_rt_tk=GN63yo1lzkNgoxgqwQJsddeNhTTv1Bp.8p.QH5hSg.Y-1740151841-1.0.1.1-6RUA_8YYOd1gZypxJqt5hL_im0JIp4fwg3pd6tM82Rc" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>