Final answer:
Higher literacy rates in African countries correlate with higher GDP per capita, suggesting that education contributes to a higher standard of living.
Step-by-step explanation:
The conclusion that can be made based on the information provided about Gross Domestic Product (GDP) and literacy rates in African countries is that there is a correlation between higher literacy rates and higher GDP per capita. This indicates that countries with a more educated population tend to have a higher standard of living. The data does not support conclusions about the educational investments of specific governments or the number of high school graduates, nor does it conclude that countries with a lower literacy rate have a stronger economy.