The Level And Structure of Single Voyage Freight Rates in the Short Run
The Level And Structure of Single Voyage Freight Rates in the Short Run
Serghios S Serghiou
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A more serious problem is, evidently, the existence of positive serial correlation, shown by the Durbin-Watson (DW) statistic. The Cochrane-Orcutt technique corrects that to a great extent as seen in the regression of the transformed data. The general relationships observed in the ordinary least squares regression are preserved and become even stronger, with R increasing from . 828 to . 955. - 28 - Table 2 Results of the Regression Analysis A. Regression with 1630 observations from September 19...71 to December 1976. (a) Ordinary Least Squares In (Y) = 10. 4781-1. 1167 In (X^-0. 2778 In (X 2 >-0. 3887 In (X ) t-statistics (79. 493) (-34. 209) (-13. 533) (-36. 587) R = 0. 828 R 2 = 0. 6858 DW = 0. 3042 (b) Cochrane-Orcutt Iterative Technique In (Y) = 9. 4755-0. 7762 In (X )-0. 2487 In (X )-0. 4037 In (X ) t-statistics (34. 122) (-7. 775) (-25. 991) (10. 697) R = 0. 955 R 2 = 0. 9127 DW = 2. 6146 p = 0. 86 B. Regression with 1122 observations from September 1971 to December 1972 and from December 1973 to December 1976.
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