Question: HDI Revisited. The United Nations Development Programme (UNDP) uses the Human Development Index (HDI) in an attempt to summarize in one number the progress in

HDI Revisited. The United Nations Development Programme (UNDP) uses the Human Development Index

(HDI) in an attempt to summarize in one number the progress in health, education, and economics of a country.

The number of cell phone subscribers per 1000 people is positively associated with economic progress in a country.

Can the number of cell phone subscribers be used to predict the HDI? Here is a scatterplot of HDI against cell phone subscribers:

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