Refer to Exercise 6.46. The researchers also examined the effect of depth on population abundance.
In exercise

a. Plot the four data sets using side-by-side boxplots to demonstrate the effect of depth on population abundance.
b. Separately for each depth, evaluate differences between the sites within and outside the oil trajectory. Use α = .05.
c. Are your conclusions at 40 m consistent with your conclusions at 100 m?

Transcribed Image Text:

Within Oil Trajectory Outside Oil Trajectory Depth 40 m 5,124 2904 3600 2,880 2,578 4146 1,048 1,336 394 7,370 6,762 744 1,874 Depth 100 m 3228 2.032 3256 3,816 2.438 4897 1346 1,676 2,0 2224 1.234 1598 2,182