Result Analysis

For experiment 1, the data suggest that the type of substrate did indeed affect survival of
guppies, which altered spot brightness over time. The muddy substrate had the largest average
increase in spot brightness, 3.5. The vegetative substrate had the smallest average increase in
spot brightness, 2.0 and sandy substrate had an increase of 3.0.

For experiment 2, the data suggest that as predation increases, the spot brightness of
guppies decreases over time. For the trial with no predators, there was an average increase in
spot brightness of 7.0. For the highest level of predation, there was an average decrease in spot
brightness of 1.5. All 3 other trials of varying predation levels also support the hypothesis.