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Table 3.
Sum of squared errors (SSE) and R 2 values for 1/r fits in the radiating-wave region using classical and empirical end-correction values. An additional column shows the absolute SSE difference, which is negligible in all cases, even for the square, high-frequency case where standing-wave fits diverged.
| Pipe | Freq. (Hz) | SSELS | SSEm | |ΔSSE| | R LS 2 | R m 2 |
|---|---|---|---|---|---|---|
| Circular | 870 | 0.00099 | 0.00098 | 0.00001 | 0.99 | 0.99 |
| Circular | 2056 | 0.0028 | 0.0031 | 0.0003 | 0.99 | 0.99 |
| Square | 474 | 0.00097 | 0.00097 | 0.00000 | 0.99 | 0.99 |
| Square | 875 | 0.027 | 0.027 | 0.00000 | 0.99 | 0.99 |
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