geteroskedastichnost
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powerpoint presentation geteroskedastichnost: chto proizoydet, esli dispersiya oshibki yavlyaetsya nepostoyannoy? π΅ππππππ π ππππ π±πππππππ 1. posledstviya geteroskedastichnosti 2. chto takoe geteroskedastichnost? 3. metodi resheniya problemi geteroskedastichnosti plan: nepravilnie intervali doveriya esli geteroskedastichnost prisutstvuet, standartnie oshibki koeffitsientov regressii budut smeshyonnimi, chto privedyot k nevernim intervalam doveriya, naprimer, 90% interval doveriya mojet na samom dele oxvativat lish 80% ili 98% istinnix znacheniy. nepravilnie intervali doveriya budut slishkom uzkimi pri nizkix znacheniyax nezavisimoy peremennoy i slishkom shirokimi pri visokix, privodya k iskajennim otsenkam znachimosti na urovne 95% ili drugom zadannom urovne doveriya. chto takoe geteroskedast...
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