UV's and Skin Cancer a Medical Statistician Wanted to Examine

question 117

Essay

UV's and Skin Cancer A medical statistician wanted to examine the relationship between the amount of UV's ( 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 states around the country. These data are shown below. {UV's and Skin Cancer Narrative} Calculate the Pearson coefficient. What sign does it have? Why?

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Definitions:

Task Analysis

A systematic process of breaking down a job into its component tasks in order to identify how it can be done effectively.

Costs Estimation

The process of predicting or approximating the cost of completing a project or producing a good.

Engineering Method

A systematic approach to planning, designing, and managing projects by applying engineering principles and practices.

Least Squares

A mathematical method used to find the best-fitting curve to a given set of points by minimizing the sum of the squares of the offsets ("the residuals") of the points from the curve.