Investigators in northern Alaska periodically monitored radio-collared wolves in 25 wolf packs over 4 years, keeping track of the packs? home ranges (?Population Dynamics and Harvest Characteristics of Wolves in the Central Brooks Range, Alaska,? Wildlife Monographs, [2008]: 1?25). The home range of a pack is the area typically covered by its members in a specified amount of time. The investigators noticed that wolf packs with larger home ranges tended to be located more often by monitoring equipment. The investigators decided to explore the relationship between home range and the number of locations per pack. A scatterplot and standardized residual plot of the data are shown below, as well as a histogram of the standardized residuals.

Does it appear that the assumptions of the simple linear regression model are plausible? Explain in a few sentences.

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2500 2000 1500 1000 500 80 100 40 60 Locations/pack -2 L 60 20 100 40 80 Locations/pack -1 Standardized residual Home range Frequency Standardized residual 3.