UDaines, uRobert M., noTyler Shumway.
Ingqungquthela yonyaka ye-7th ephepheni lezemfundo yezomthetho. 2011.
abstract
Sihlola ukuthi ngabe izithombe zobulili ezingcolile zenza yini isehlukaniso. Ukusebenzisa idatha yesiphakamiso sezinga likahulumeni ngesilinganiso sohlukaniso nokuthengiswa komagazini we-Playboy, sibhala ubuhlobo obunamandla obunqamulelayo kanye nochungechunge lwezikhathi phakathi kokuthengiswa okungekho emthethweni kwe-Playboy nenani lesahlukaniso. Ukuhlobana okulula phakathi kwesehlukaniso nokuthengisa okusele iminyaka emibili ngamaphesenti ama-44, nge-T-Statistic ye20. Lokhu kuhlangana okukhulu kuqinile ekusebenziseni kuphela ingxenye yokuqala yesampula, kulungiswa kuwo wonke ama-heterogeneity wezwe futhi nganoma yisiphi isikhathi sesimo ngokubandakanya imiphumela yonyaka nonyaka, nokusebenzisa ukuguquguquka kwensimbi ukulungisa noma ikuphi ukuthengiswa okungenzeka ekuthengisweni kwe-Playboy. Amanani wedivosi ahambisana kakhulu nokuthengiswa kwePenthouse kepha akuhlangene nokuthengisa kumagazini we-Time. Izilinganiso zethu zizonke zibonisa ukuthi mhlawumbe izithombe zobulili ezingcolile zabangela amaphesenti ama-10 ayo yonke isehlukaniso e-United States ngamashumi ayisithupha nesikhombisa.
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