What does it mean to live in a country that is 0.517 poor?

According to the UNDP’s Global Multidimensional Poverty Index (MPI), the Republic of Chad has a poverty score of 0.517. But what does this number mean? Is it

According to the UNDP’s Global Multidimensional Poverty Index (MPI), the Republic of Chad has a poverty score of 0.517. But what does this number mean? Is it