Essay
The following scatterplot shows the population of Canada plotted against 5 year intervals from 1970 through 2015.
a. Based on the scatterplot, is the linear model appropriate? Explain. 
b. A linear regression model was estimated to describe the trend in the population of Canada over time. Examine the plot of Residuals against Year shown below. Is the association between Population and Year reasonably straight? 
c. Would a re-expression of the data help? If so, what would you recommend?
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a. The scatterplot appears straight enou...View Answer
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