Figure 15.
Two scatter plots with fitted lines show linear increase of epsilon and sigma of theta with theta over L.The left plot shows epsilon in mean of theta percent against theta over L with scattered points and a fitted line labelled y equals 84.07 x plus 0.55. Values increase linearly from about 3 to about 22 percent. The right plot shows sigma of theta percent versus theta over L with a fitted line labelled y equals 2.13 x plus 0.38. Sigma increases from about 0.42 to about 0.92, showing a clear linear relationship.

Empirical relationship derived using linear regression analysis for (a) ϵ in mean of θo against θL and (b) σ in mean of θo against θL

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