The following normal probability plot was constructed using part of the data appearing in the paper “Trace Metals in Sea Scallops” (Environmental Concentration and Toxicology 19: 1326–1334).

The variable under study was the amount of cadmium in North Atlantic scallops. Do the sample data suggest that the cadmium concentration distribution is not normal? Explain.

Transcribed Image Text:

Observation D -1.60 -0.80 0.00 0.80 1.60 Normal 2.40 score