Research Article
ICEEMDAN-Based Transfer Entropy between Global Commodity Classes and African Equities
| | Obs. | Min | Max | Mean | SD | Skewness | Kurtosis | Normtest.W | ADF | PP |
| Panel A: cocoa | Ghana | 1972 | −0.1844 | 0.1750 | −0.0003 | 0.0101 | 0.0652 | 104.8500 | 0.6661a | −17.528a | −48.7839a | Ivory Coast | 1972 | −0.0823 | 0.1036 | −0.0002 | 0.0121 | 0.1671 | 6.4977 | 0.9370a | −46.8546a | −47.0482a | Cocoa | 1972 | −0.0890 | 0.1149 | 0.0001 | 0.0180 | −0.0475 | 1.7259 | 0.9878a | −45.0131a | −45.0131a |
| Panel B: coffee | Ivory Coast | 1680 | −0.0723 | 0.1091 | −0.0003 | 0.0124 | 0.5190 | 8.4786 | 0.9190a | −43.6861a | −43.6501a | Kenya | 1680 | −0.3384 | 0.3205 | 0.0001 | 0.0173 | −1.7359 | 184.4839 | 0.4779a | −49.6608a | −49.8064a | Tanzania | 1680 | −0.3807 | 0.3911 | −0.0001 | 0.0190 | 0.2442 | 218.9706 | 0.4415a | −37.4915a | −58.0894a | Uganda | 1680 | −0.1995 | 0.1055 | −0.0002 | 0.0126 | −2.1530 | 44.1631 | 0.8072a | −38.2268a | −38.6505a | Coffee | 1680 | −0.1505 | 0.2180 | 0.0003 | 0.0239 | 0.5653 | 6.1437 | 0.9537a | −43.0812a | −43.0746a |
| Panel C: copper | Namibia | 2514 | −1.4841 | 1.5234 | 0.000 | 0.0476 | 0.9116 | 787.6078 | 0.2793a | −38.9807a | −93.3737a | South Africa | 2514 | −0.1214 | 0.0891 | 0.0001 | 0.0179 | −0.5405 | 3.6386 | 0.9646a | −49.6459a | −49.8784a | Zambia | 2514 | −0.0851 | 0.1234 | −0.0002 | 0.0122 | 0.3057 | 12.1004 | 0.8648a | −41.7554a | −41.7409a | Copper | 2514 | −0.1109 | 0.0988 | 0.0001 | 0.0155 | −0.1475 | 3.8851 | 0.9636a | −51.6736a | −51.7484a |
| Panel D: corn | Egypt | 1500 | −0.4048 | 0.2659 | −0.0002 | 0.0245 | −3.7138 | 81.0439 | 0.6664a | −34.8129a | −34.6987a | Kenya | 1500 | −0.3384 | 0.3205 | 0.0002 | 0.0185 | −1.6310 | 148.3292 | 0.5600a | −43.1659a | −43.0374a | Malawi | 1500 | −0.3944 | 0.3033 | 0.0003 | 0.0192 | −8.9872 | 278.4907 | 0.2901a | −19.7749a | −39.7032a | Nigeria | 1500 | −0.3213 | 0.1037 | −0.0002 | 0.0187 | −5.3234 | 81.6910 | 0.6589a | −35.6957a | −36.3834a | South Africa | 1500 | −0.2240 | 0.0876 | 0.0001 | 0.0225 | −1.9575 | 16.3399 | 0.8766a | −40.4411a | −40.4639a | Uganda | 1500 | −0.2022 | 0.1055 | 0.0000 | 0.0158 | −1.5903 | 23.5141 | 0.8387a | −37.3765a | −37.7664a | Corn | 1500 | −0.2909 | 0.0858 | −0.0001 | 0.0241 | −2.9605 | 29.2003 | 0.7994a | −36.4454a | −36.3915a |
| Panel E: crude oil | Egypt | 2023 | −0.4048 | 0.1170 | −0.0002 | 0.0216 | −5.8759 | 100.6912 | 0.7104a | −39.7403a | −39.4535a | Morocco | 2023 | −0.1732 | 0.0556 | 0.0000 | 0.0102 | −2.4088 | 44.2860 | 0.8518a | −40.8932a | −40.8884a | Nigeria | 2023 | −0.3426 | 0.0812 | −0.0002 | 0.0163 | −5.8521 | 110.6448 | 0.6922a | −40.0702a | −40.7037a | Tunisia | 2023 | −0.0951 | 0.1086 | −0.0002 | 0.0096 | −0.1891 | 16.8704 | 0.8915a | −47.959a | −47.959a | Crude oil | 2023 | −0.6856 | 0.3196 | 0.0001 | 0.0358 | −3.8484 | 84.6567 | 0.7053a | −24.5349a | −49.6916a |
| Panel F: gold | Ghana | 1765 | −0.1844 | 0.1750 | −0.0003 | 0.0103 | −0.9313 | 111.4390 | 0.6378a | −17.5152a | −48.3704a | Ivory Coast | 1765 | −0.0663 | 0.1148 | −0.0003 | 0.0126 | 1.0164 | 10.6749 | 0.8996a | −43.911a | −43.9843a | South Africa | 1765 | −0.1492 | 0.0840 | 0.0001 | 0.0182 | −0.9988 | 7.6810 | 0.9333a | −43.4889a | −43.4889a | Tanzania | 1765 | −0.3807 | 0.3930 | −0.0001 | 0.0186 | 0.4598 | 226.0898 | 0.4428a | −38.6487a | −60.0466a | Gold | 1765 | −0.0888 | 0.0525 | 0.0001 | 0.0101 | −1.1150 | 9.7180 | 0.9124a | −40.8272a | −40.8123a |
| Panel G: natural gas | Egypt | 1880 | −0.4048 | 0.2548 | −0.0003 | 0.0222 | −3.0051 | 74.0860 | 0.7287a | −38.0372a | −37.9597a | Nigeria | 1880 | −0.3426 | 0.0893 | −0.0002 | 0.0171 | −5.8108 | 103.1627 | 0.6708a | −38.6803a | −39.3506a | Tanzania | 1880 | −0.1907 | 0.1778 | 0.0000 | 0.0137 | 0.7186 | 56.4202 | 0.6514a | −53.2264a | −52.2806a | Natural gas | 1880 | −0.2866 | 0.2637 | 0.0000 | 0.0386 | 0.3514 | 7.6845 | 0.9118a | −46.9268a | −47.3475a |
| Panel H: palladium | South Africa | 973 | −0.1264 | 0.0840 | 0.0001 | 0.0187 | −0.8466 | 5.4978 | 0.9396a | −31.8417a | −31.8349a | Zimbabwe | 973 | −0.9230 | 0.1656 | 0.0001 | 0.0499 | −11.6507 | 200.3893 | 0.3812a | −13.995a | −28.0297a | Palladium | 973 | −0.2298 | 0.1814 | 0.0008 | 0.0234 | −0.7266 | 15.9859 | 0.8704a | −27.4854a | −27.3236a |
| Panel I: palm oil | Ghana | 1971 | −0.1899 | 0.1750 | −0.0003 | 0.0102 | −0.2971 | 108.8040 | 0.6714a | −15.0156a | −49.813a | Ivory Coast | 1971 | −0.0663 | 0.1114 | −0.0002 | 0.0122 | 0.6882 | 8.7048 | 0.9200a | −47.3046a | −47.416a | Kenya | 1971 | −0.3384 | 0.3205 | 0.0000 | 0.0153 | −0.9127 | 234.9609 | 0.5133a | −55.1105a | −55.6653a | South Africa | 1971 | −0.1400 | 0.0840 | 0.0001 | 0.0178 | −0.6833 | 5.2416 | 0.9544a | −46.3204a | −46.3017a | Palm oil | 1971 | −0.1219 | 0.1304 | 0.0003 | 0.0179 | −0.1353 | 5.5025 | 0.9511a | −47.2528a | −47.2528a |
| Panel J: rice | Egypt | 1849 | −0.4048 | 0.2548 | −0.0003 | 0.0224 | −2.9181 | 72.2304 | 0.7279a | −38.0794a | −38.0155a | Nigeria | 1849 | −0.3426 | 0.0893 | −0.0002 | 0.0173 | −5.6259 | 99.9010 | 0.6705a | −38.1888a | −38.8014a | Tanzania | 1849 | −0.1907 | 0.1778 | 0.0000 | 0.0139 | 0.8522 | 56.0470 | 0.6438a | −52.7263a | −51.8117a | Rice | 1849 | −4.6766 | 4.8092 | 0.0001 | 0.1575 | 1.2361 | 887.3842 | 0.0565a | −22.3664a | −309.259a |
| Panel K: silver | Namibia | 2724 | −1.4841 | 1.5234 | 0.0000 | 0.0458 | 0.9491 | 852.4708 | 0.2763a | −40.5522a | −97.5834a | Zambia | 2724 | −0.1055 | 0.1234 | −0.0002 | 0.0119 | 0.3309 | 14.1308 | 0.8546a | −44.8787a | −44.994a | Silver | 2724 | −0.1979 | 0.1472 | 0.0001 | 0.0195 | −0.8753 | 10.8045 | 0.8996a | −38.5115a | −50.5268a | Panel L: soybeans | Ghana | 2022 | −0.1844 | 0.1750 | −0.0003 | 0.0104 | −1.0241 | 104.6118 | 0.6534a | −18.6538a | −51.1332a | Malawi | 2022 | −0.3946 | 0.2992 | 0.0003 | 0.0164 | −10.9823 | 393.8550 | 0.2505a | −44.9919a | −45.8344a | Nigeria | 2022 | −0.3426 | 0.0947 | −0.0002 | 0.0158 | −7.4810 | 143.8948 | 0.6165a | −40.091a | −40.8739a | Uganda | 2022 | −0.1995 | 0.1055 | 0.0000 | 0.0138 | −1.5791 | 29.4339 | 0.8302a | −45.0267a | −45.3517a | Zambia | 2022 | −0.3908 | 0.1505 | −0.0004 | 0.0149 | −8.3849 | 239.6836 | 0.6076a | −41.7939a | −41.8346a | Soybeans | 2022 | −0.1668 | 0.0726 | 0.0001 | 0.0149 | −1.4990 | 13.6953 | 0.9033a | −42.6755a | −42.6686a |
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