Graphs

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Size vs Exposure
Graph 1: The average size of the barnacles with respect to the slope of the rock. 		The graph on the left, Graph 1, shows the correlation between the average size of the barnacles and the slope of the rock on which they were measured. The regression of the points is slightly negative suggesting that the bigger barnacles live on flatter surfaces.
Size vs ExposureGraph 2: The average size of the barnacles is graphed with respect to the exposure rating. Graph 2 shows what could be a positive correlation between the exposure rating and the average sizes of the barnacles. By taking the averages of the average sizes in each exposure rating and graphing those values, the positive correlation becomes more distinct, as seen in Graph 3. The curvature of the points suggest an polynomial, if not exponential, increase of the sizes as the exposure becomes more open to wave activity. Average Size vs ExposureGraph 3: The average of the average sizes of barnacles in each exposure rating is graphed with respect to the exposure ratings.

Even though the correlation between the area covered by the barnacles and the exposure rating was not significant, p=0.057, and Graph 4 and Graph 5 show a positive correlation between the two variables. Again, as in Graph 2, the values in each exposure rating were averaged to give a more distinct graph of the values, and as can be seen in Graph 5, the barnacles seem to be getting more dense the more open the area is to wave action.

Density vs. ExposureGraph 4: The area covered by the barnacles is graphed with respect to the exposure rating.Average Density vs. exposureGraph 5: The average of the areas in each exposure rating is graphed with respect to the exposure rating.