In the article "Trophic Interaction Cycles in Tundra Ecosystems and the Impact of Climate Change" (Bio Science, Vol. 55, No. 4, pp. 311-321), R. Ims and E. Fuglei provided an overview of animal species in the northern tundra. One threat to the snow goose in arctic Canada is the lemming. Snowy owls act as protection to the snow goose breeding grounds. For two years that are 3 years apart, the following graphs give relative frequency histograms of the distances, in meters, of snow goose nests to the nearest snowy owl nest.

For each histogram, do the following:
a. Identify the shape of the distribution with regard to modality.
b. Identify the shape of the distribution with regard to symmetry (or nonsymmetry).
c. If the distribution is unimodal and nonsymmetric, classify it as either right skewed or left skewed.
d. Compare the two distributions.

Transcribed Image Text:

0.4 023 0.2 0.1 Year 1 0.0 0.5 0.4 0.3 0.2 0.1 0.0 Year 2 0 400 800 1200 1600 2000 2400 2800 Distance from owl nest