بررسی تغییرات ترجیحات مصرف ‏کنندگان برای روغن خوراکی جامد و مایع (کاربرد آزمون ناپارامتریک، مطالعه موردی استان فارس)

نوع مقاله: مقاله پژوهشی

نویسندگان

1 دانشجوی دکتری اقتصاد کشاورزی، دانشکدة اقتصاد کشاورزی و توسعه، دانشگاه تهران، تهران، ایران.

2 دانش ‏آموختة کارشناسی ارشد اقتصاد کشاورزی، دانشکدة اقتصاد کشاورزی و توسعه، دانشگاه تهران، تهران، ایران

چکیده

در تحلیل رفتار عقلایی مصرف‏ کننده اثبات یک تابع مطلوبیت نئوکلاسیک برای داده‏های مصرف اجتناب ناپذیر می ‏باشد. تحقیقات مربوط به توابع تقاضا زمانی صحیح خواهد بود که تابع تقاضا و مطلوبیت مبنا قرار گرفته، تقریب خوبی از تابع مطلوبیت و تقاضای حقیقی باشد. در این تحقیق از روش ترجیحات آشکار شده‏‌ جهت آزمون پایداری و وجود شکست ساختاری در ترجیحات مصرف‏ کنندگان استان فارس برای سبد کالایی روغن طی دوره 94-1369 استفاده شده است. بر اساس نتایج در کل داده‏ های موجود تنها سه مورد نقض در سال های 1381 و 1372 ، 1382 و 1376 ، 1383 و 1376 مشاهده شد. آزمون کروسکال-والیس نشان داد که این تناقضات ناشی از تغییر در ترجیحات نبوده و ممکن است به دلیل خطا در اندازه‏ گیری یا تکانه‏ های غیر خطی ناپایدار باشد و فرضیه وجود رفتار عقلایی مورد تأیید قرار گرفت. بنابراین داده‏های مصرف سبد روغن خانوارهای استان فارس در طی دوره مذکور با یک تابع مطلوبیت نئوکلاسیک قابل تفسیر هستند.

کلیدواژه‌ها


عنوان مقاله [English]

Investigating the Changes in consumer preferences for solid and liquid edible oils (Application of nonparametric test, case study: Fars province)

نویسندگان [English]

  • S. Mehrjou 1
  • R Shakeri Bostanabad 2
1 PhD. Student in Agricultural Economics, Faculty of Agricultural Economics and Development, University of Tehran,
2 MSc Graduate in Agricultural Economics, Faculty of Agricultural Economics and Development, University of Tehran, Tehran, Iran
چکیده [English]

In analysing consumer rational behaviour, the proof of a neoclassical utility function for consumption data is inevitable. Researches of demand functions will be correct when the demand function and the basis of utility are a good approximation of the utility function and the actual demand. In this study, the revealed preferences method was used to test the stability and structural failure in Fars province's consumer preferences for the oil from 1990 to 2016. Based on the results, only three violations were found in the total data in the years 2002 & 1993, 2003 & 1997, 2004 & 1997. The Kruskal-Wallis test showed that these inconsistencies weren't due to change in preferences and may be unstable due to errors in measurements or nonlinear momenta, and the assumption of rational behaviour was confirmed. Thus, the consumption data of the oil basket Fars province's households can be interpreted using a neoclassical utility function.

کلیدواژه‌ها [English]

  • Revealed preferences test
  • Consumer preferences
  • Edible oil
  • Fars
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