THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION

question 9

Multiple Choice

THE NEXT QUESTIONS ARE BASED ON THE FOLLOWING INFORMATION:
A professor of statistics is interested in studying the relationship between the number of hours graduate students spent studying for his comprehensive final exam and the exam score.The results of the regression analysis of hours studied on exam scores are presented below.
-In a regression problem the following pairs of (x,y) are given: (-2,4) ,(-1,1) ,(0,0) ,(1,1) and (2,4) .What is the value of the coefficient of determination?

• A)-1
• B)+1
• C)0
• D)undefined

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Definitions:

Solidification

The process of a liquid becoming solid, especially upon cooling, as in the formation of igneous rock from cooled magma or lava.

Erosion

The wearing away of soil, sediment, and rock through the removal of material by running water, waves, currents, ice, wind, and gravity.

Weathering

Physical disintegration and chemical decomposition of rocks, sediment, and soil due to exposure to water and other chemical, atmospheric, and biological agents.

Sediment

Particles of rock, minerals, or organic materials that have been transported and deposited by water, wind, ice, or gravity.