... bbaabbaaD61,12389)( 44 ,2216))(( 48 ,3231))((61,1085))((78,3155)(96,1752)(222======yyyybbyyaabbaabbaa0866.0 4. 4353 48 .323161.108 544 .221666.17527898.1 4. 4353 44 .221661.108 548 .323178.3155 4. 4353)61.1085(78.315596.17522=ìì==ìì==ì=BADTrng ... 71289 40 31,7 1-1970 18 ,4 490 338,56 240 100 9016 1-1971 16,2 166 262 ,44 27556 2389,2 1-1972 13,8 28 190 ,44 7 84 386 ,4 1-1973 13 ,4 83 179,56 6889 1112,2 n=5 xi=76,9 xi=15 ,4 yi=10 34 yi=206,8 ... (%t%2.01002.0100=ì%6.31001.1820=ì%2.71001.1 840 =ì%1.121002.9191.1 840 3 .44 .72=ì+ì+ì %4. 661002. 94. 7 14. 726.82=ì+ì %4. 9100 4. 7213=ì%8.01002.95.9=ìTrng i hc Nụng nghip...