The following data give the photosynthetic capacity of nine individual females of the neotropical tree Ocotea tenera, according to the number of fruits produced in the previous reproductive season (Wheelwright and Logan 2004). The goal of the study was to investigate how reproductive effort in females of these trees impacts subsequent growth and photosynthesis. The data are also available at whitlockschluter3e.zoology.ubc.ca.

a. Graph the association between these two variables using the most appropriate method. Identify the type of graph you used.

b. Which variable is the explanatory variable in your graph? Why?

c. Describe the association between the two variables in words, as revealed by your graph.

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Number of fruits produced previously 1010 1414 55 2424 5050 3737 8989 162162 149⁹149 Photosynthetic capacity (μmol O2/m2/s) (μmolâ€/m²/s) 13.013.0 11.911.9 11.511.5 10.610.6 11.111.1 9.49.4 9.39.3 9.19.1 7.37.3