The Following Scatterplot Shows World Population (Millions) Plotted Against 5

question 20

Essay

The following scatterplot shows world population (millions) plotted against 5 year intervals from 1950 through 2000.
a. Based on the scatterplot, is the linear model appropriate? Explain. b. A linear regression model was estimated to describe the trend in world population over time. Based on the plot of residuals versus predicted values shown below, would you consider this model appropriate? Explain. c. Would a re-expression of the data help? If so, what would you recommend?

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Definitions:

Hydro-

A prefix meaning water, used to denote a relationship to water or moisture in various scientific and technical contexts.

Albumin

A protein commonly found in blood plasma, vital for maintaining the osmotic pressure needed for proper distribution of body fluids.

Lith/o

A prefix in medical terminology meaning "stone," often used to describe conditions related to the formation of calculi or stones in the body, such as lithotripsy.

Olig-

A prefix denoting few or scanty, often used in medical and scientific terms.