Russel-Research-Method-in-Anthropology

174 Chapter 7
TABLE 7.1
Per Capita Gross Domestic Product in U.S. Dollars for the 50 Poorest Countries in 1998
Country PCGDP Country PCGDP
Mozambique 92 Comoros 305
Congo 98 Sudan 305
Guinea-Bissau 100 Mauritania 328
Burundi 103 Vietnam 336
Ethiopia 107 Togo 344
Chad 150 Ghana 346
Sierra Leone 154 Uganda 347
Malawi 156 Yemen 354
Niger 159 Gambia 355
Somalia 177 Kyrgyzstan 366
Nepal 197 Kenya 373
Bhutan 199 Moldova 374
Madagascar 208 Equatorial Guinea 377
Eritrea 210 Mongolia 384
Tanzania 213 Benin 399
Tajikistan 219 Zambia 413
Burkina Faso 221 India 422
Rwanda 225 Lesotho 425
Laos 250 North Korea 440
Mali 254 Nicaragua 442
Cambodia 255 Haiti 443
Myanmar 282 Pakistan 458
Liberia 285 Uzbekistan 470
Central African Republic 296 Indonesia 478
Bangladesh 299 Guinea 515
SOURCE: Statistics Division of the United Nations Secretariat and International Labour Office.
http://www.un.org/depts/unsd/social/inc-eco.htm
Compare the shape of this distribution to the one in figure 7.4b showing the
distribution of the 10 sample means for the five GDP values we’re dealing
with here. That distribution looks more like the shape of the normal curve:
It’s got that telltale bulge in the middle.
Part 2 of the Central Limit Theorem
Figure 7.5 shows the distribution of the 50 data points for GDP in table 7.1.
The range is quite broad, from $92 to $515 per year per person, and the shape
of the distribution is more or less normal.
The actual mean of the data in table 7.1 and in figure 7.5—that is, the