Top 10 Countries With the Lowest Average IQ

IQ - Intelligence quotient. An intelligence quotient (IQ) is a score derived from one of several standardized tests designed to assess human intelligence.

Source: http://www.statisticbrain.com/countries-with-the-highest-lowest-average-iq/, Created on 1/22/2016

The Top Ten

1 Equatorial Guinea - 59

Wow that's low

2 Ethiopia - 63

3 Sierra Leone - 64

4 Democratic Republic of the Congo - 65

I just checked out the “Related lists” and noticed that:
3 countries from this list are in the top 10 of the list "Top Ten Countries With the Largest Average Penis Length" - Democratic Republic of the Congo, Ghana, Sudan.
Did I accidentally discover something important?!?

5 Zimbabwe - 66

6 Guinea - 66

7 Nigeria - 67

8 Ghana - 71

9 Tanzania - 72

10 Sudan - 72

Not surprising, most Sudanese women only get 4-5 years of education.