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country gdppc_2010 gdppc_1960 growthpc invrate growthpop school Algeria 2231.98 1280.385 0.0111146 0.3342425 0.0237818 0.4368667 Argentina 10749.33 5251.861 0.0143252 0.2101571 0.0134522 0.6514226 Australia 25249.06 9393.286 0.0197759

country gdppc_2010 gdppc_1960 growthpc invrate growthpop school
Algeria 2231.98 1280.385 0.0111146 0.3342425 0.0237818 0.4368667
Argentina 10749.33 5251.861 0.0143252 0.2101571 0.0134522 0.6514226
Australia 25249.06 9393.286 0.0197759 0.2772571 0.0154944 1
Austria 26693.7 7434.184 0.0255668 0.2581322 0.0034867 0.9438034
Bangladesh 558.0624 254.8251 0.0156779 0.160085 0.0217564 0.2529874
Belgium 24518.01 7454.843 0.0238109 0.2336798 0.0034848 0.9233246
Benin 377.0443 256.9788 0.0076674 0.1574922 0.0259357 0.1600268
Bolivia 1232.689 894.757 0.006408 0.1665765 0.0217025 0.473708
Botswana 4189.535 237.5136 0.0574024 0.2953562 0.0268577 0.3669361
Brazil 4716.613 1447.839 0.0236204 0.1998397 0.0197115 0.5631877
Burkina Faso 282.6969 122.2078 0.016773 0.1705111 0.0243184 0.058345
Burundi 138.2482 116.0099 0.0035075 0.1046809 0.0209522 0.0574938
Cameroon 713.6434 508.9939 0.0067589 0.1814973 0.0257479 0.1959727
Canada 25575.2 9374.891 0.0200718 0.2218715 0.0128952 0.9638103
Central African Republic 239.516 355.8209 -0.0079161 0.1328002 0.0214808 0.0946261
Chad 300.1061 253.9442 0.0033404 0.1696105 0.026703 0.0700245
Chile 6430.058 1841.08 0.0250126 0.2033742 0.0160993 0.6924723
Colombia 3233.427 1188.254 0.0200212 0.1946495 0.0212429 0.5084967
Congo, Dem. Rep. 105.5317 324.9032 -0.0224903 0.1261393 0.0291376 0.1980835
Congo, Rep. 1253.323 617.8512 0.0141461 0.2871082 0.0276694 0.4174214
Costa Rica 5226.566 1797.966 0.021342 0.2054916 0.0250118 0.4823301
Cote d'Ivoire 587.8569 550.6874 0.0013063 0.1618427 0.0338199 0.1732325
Denmark 30528.6 11390.67 0.0197174 0.2190146 0.0038354 0.9745273
Dominican Republic 4049.039 912.4695 0.0298016 0.1931292 0.0219732 0.4259138
Ecuador 1728.052 820.3111 0.0149013 0.1927537 0.0236248 0.4808476
Egypt, Arab Rep. 1975.553 430.3645 0.0304794 0.2135478 0.0213441 0.5460164
El Salvador 2555.888 1448.829 0.0113529 0.1589986 0.0160691 0.3835045
Finland 27114.01 7306.041 0.026227 0.2495549 0.0038254 0.9936931
France 22758.16 7499.891 0.0222007 0.2171164 0.0066628 0.8861901
Ghana 359.932 281.805 0.004894 0.1581956 0.0257175 0.4073795
Greece 13578.44 3385.66 0.0277787 0.2816611 0.0061221 0.829343
Guatemala 1862.667 959.1566 0.0132742 0.1522306 0.0248239 0.2416193
Guyana 1210.57 688.8562 0.0112763 0.2701464 0.0059556 0.764949
Honduras 1392.316 751.1958 0.0123411 0.2275751 0.0267061 0.2891267
India 794.8013 180.9617 0.0295961 0.2187354 0.0201187 0.3639202
Israel 22239.1 5827.836 0.0267841 0.2274293 0.0256531 0.8613328
Italy 18943.05 5847.465 0.0235086 0.2258614 0.0037272 0.7772114
Kenya 468.6997 260.83 0.0117219 0.1983576 0.0321816 0.328142
Lesotho 495.6617 132.2258 0.0264276 0.3260746 0.0187196 0.2208798
Liberia 260.5462 608.0255 -0.0169487 0.0959886 0.0255062 0.2016204
Madagascar 242.6797 409.1064 -0.0104447 0.133378 0.0280169 0.1769435
Malawi 185.1166 98.63486 0.0125912 0.1965641 0.0288293 0.1853939
Mauritania 609.1711 373.8769 0.0097635 0.2445053 0.0279766 0.1105228
Mexico 6105.276 2455.952 0.0182128 0.2217191 0.0216515 0.4988056
Morocco 1874.973 647.8941 0.0212524 0.2240249 0.0202194 0.2954443
Nepal 269.2452 139.081 0.0132113 0.1709681 0.0224711 0.2622626
Netherlands 26552.79 8562.937 0.0226338 0.2318937 0.0073829 0.9149601
Nicaragua 907.0311 914.4466 -0.0001628 0.2230798 0.023664 0.3717444
Niger 179.2932 313.9102 -0.0112017 0.134525 0.0312593 0.048521
Norway 39970.33 10695.36 0.0263665 0.2685001 0.0062266 0.936202
Oman 11345.43 966.5243 0.0492573 0.2377494 0.0321527 0.3462616
Pakistan 668.545 187.4651 0.0254302 0.1789945 0.0265962 0.2136914
Panama 6109.585 1710.511 0.0254613 0.2407149 0.0227355 0.5759574
Papua New Guinea 744.2106 425.5578 0.0111785 0.2218937 0.0249793 0.1238075
Paraguay 1621.039 662.8561 0.0178853 0.2090325 0.0243974 0.349555
Peru 3181.498 1647.251 0.0131649 0.2447776 0.0214885 0.6119521
Portugal 11747.67 2368.674 0.0320265 0.2662683 0.0036616 0.6645736
Puerto Rico 16910.46 3767.415 0.0300309 0.183954 0.0091288 0.8463691
Rwanda 337.3222 225.4166 0.0080618 0.1365356 0.026878 0.1113496
Senegal 561.7209 615.2308 -0.0018198 0.1538688 0.0281198 0.1482832
Sierra Leone 268.3073 223.3528 0.0036676 0.1289886 0.0197359 0.1630919
South Africa 3753.453 2203.729 0.0106505 0.2175425 0.0211122 0.7164113
Spain 15457.72 3711.115 0.0285355 0.2550389 0.0082787 0.8393697
Sri Lanka 1308.784 273.7067 0.0312959 0.2170143 0.0147146 0.641354
Sudan 679.0657 399.2486 0.0106227 0.1618084 0.0279207 0.1757149
Sweden 32507.45 11360.41 0.0210267 0.2151269 0.0045105 0.9099407
Syrian Arab Republic 1525.809 482.4969 0.0230261 0.2128636 0.02998 0.4786823
Togo 264.739 176.569 0.0081007 0.1871364 0.0268082 0.2248916
Trinidad and Tobago 10513.53 3342.313 0.02292 0.2251771 0.0093335 0.6609367
Turkey 5355.994 1582.569 0.0243833 0.1814962 0.0189828 0.4700245
United Kingdom 28033.79 10059.52 0.0204978 0.1870619 0.003439 0.8694245
United States 37329.6 13723.23 0.0200139 0.192059 0.0107559 0.9085448
Uruguay 9096.795 4182.119 0.0155421 0.1698724 0.0055902 0.7452299
Venezuela, RB 5528.369 5437.469 0.0003316 0.2480929 0.0267681 0.5293587
Zambia 432.2461 544.4534 -0.0046157 0.215827 0.0289172 0.1758664
Zimbabwe 320.7603 389.0158 -0.0038585 0.1532292 0.0241808 0.279039

1. Estimate the equation for per capita GDP growth derived from the Harrod-Domar model and provide a test statistic for the null hypothesis that the effect of population growth in the data is the same as what is predicted by the model.

2. Suppose the capital/output ratio in the economy is fixed and equal to 6. Based on the estimate you computed for Q1, can you reject that the coefficient on the savings/investment rate is equal to the model-implied coefficient at the 5% significance level?

3.Estimate the steady-state output per capita equation for the Solow model using the investment/savings rate and population growth. Assume that g+depreciation = 0.05, and remember to transform the variables in the data so they correspond to the objects in the Solow steady state equation. What is the coefficient on the investment rate?

4. Estimate the Solow model steady-state question like in the last question, only now include the log schooling enrollment rate as a control to capture "human capital." What is the coefficient on the savings/investment rate now?

5. What can we conclude from comparing the estimates from Q3 and Q4?

Question 5 options:

a

R squared increased when going from Q3 to Q4 which is the only thing we should think about when evaluating the model

b

Adding human capital accumulation to the Solow model reduced the importance of measurement error in the investment rate

c

Adding human capital accumulation to the Solow model improves the fit of the model in terms of the reasonablesness of the share of physical capital in output

d

Human capital investment rate is likely to be negatively correlated with the physical capital savings/investment rate but positively correlated with output per capita

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