A Medical Statistician Wanted to Examine the Relationship Between the Amount

question 42

Essay

A medical statistician wanted to examine the relationship between the amount of sunshine (x) and incidence of skin cancer (y). As an experiment he found the number of skin cancers detected per 100 000 of population and the average daily sunshine in eight country towns around NSW. These data are shown below. $$\begin{array} { | l | c | c | c | c | c | c | c | c | } \hline \text { Average daily sunshine (hours) } & 5 & 7 & 6 & 7 & 8 & 6 & 4 & 3 \\\hline \text { Skin cancer per } 100000 & 7 & 11 & 9 & 12 & 15 & 10 & 7 & 5 \\\hline\end{array}$$ Draw a scatter diagram of the data and plot the least squares regression line on it.

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Definitions:

Anti-Pollution Standards

Regulations designed to limit or control the release of pollutants into the environment to protect ecological and human health.

Low Wage Workers

Individuals employed in job positions that pay less than the median wage of the labor market.

Profits

Financial gains obtained when the revenues earned from business activities exceed the expenses, costs, and taxes needed to sustain those activities.

Underdeveloped Countries

Nations characterized by low levels of economic productivity, income, and technological sophistication, often accompanied by poor standards of living.