Statistical Analysis

Statistical tests were performed with SPSS, version 12.0, and SigmaPlot, SPSS, version 8. Differences between two groups were determined by Welch's t-test, adapted to unequal variances. Statistical tests were considered significant at a level of p <0.05. The results are either presented with ±0.1 standard deviation (SD) or the 95% confidence interval (CI) as indicated. Results of correlation tests are presented with Pearson's adjusted R2.

FIGURE 3.6 The relation between force and velocity for the eight individuals of Durvillaea antarctica tested in a flume. FDrag is the drag force, and u is the velocity. Error bars indicate standard deviations of 60 s of data, recorded at 10 Hz (i.e., 600 data points).

FIGURE 3.6 The relation between force and velocity for the eight individuals of Durvillaea antarctica tested in a flume. FDrag is the drag force, and u is the velocity. Error bars indicate standard deviations of 60 s of data, recorded at 10 Hz (i.e., 600 data points).

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