_Calculation of Regression Lines Shown in Figure 2_
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Fishing Miles
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(X_i - [=X]) (Y_i - [=Y]) (X_i - [=X])(Y_i - [=Y]) (X_i - [=X])^2
-.452 -.027 .012 .204
-.882 -.579 .511 .778
.058 -.483 -.028 .003
.548 .393 .215 .300
.068 -.208 -.014 .005
.658 .905 .595 .433
---- ---- ----- -----
Total. 1.291 1.723
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Area
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(X_i - [=X]) (Y_i - [=Y]) (X_i - [=X])(Y_i - [=Y]) (X_i - [=X])^2
.041 -.027 -.001 .002
-.445 .579 .258 .198
-.514 -.483 .248 .264
.034 .393 .013 .001
.400 -.208 -.083 .160
.484 .905 .438 .234
---- ---- ---- ----
Total. .873 .859
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The results are the following equations, which are shown, together with
the points from which they were calculated, on figure 2.