Only economic indicators are not sufficient to determine the level of development in a country. In many countries with high levels of welfare, the failure to resolve social constraints has shown that for the indication of the development of that country indicators are needed. Various global indices are used to determine the level of development of the countries. One of the indices published by the United Nations Development Program is the Human Development Index (HDI). This index is used to measure development by taking into account income, education and health indicators. In this study, the provinces in Turkey were grouped according to their level of development using the HDI index. In this context, a grey clustering analysis was used to group similar provinces. The research data taken from TUIK for 81 provinces are divided into three clusters according to their level of development from high to weak and marked by the different colors on the map of Turkey. In addition, it is analyzed if there is a correlation between the life satisfaction of provinces and the obtained grey clusters. The results of the study can be used in determining plans and policies for the purposes of raising welfare, reducing development differences between the provinces, thus increasing the welfare of the population life level and conditions in the underdeveloped provinces.
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