An Analyst Examines the Effect That Various Variables Have on Crop

question 40

Essay

An analyst examines the effect that various variables have on crop yield.He estimates where y is the average yield in bushels per acre,x₁ is the amount of summer rainfall,x₂ is the average daily use in machine hours of tractors on the farm,and x₃ is the amount of fertilizer used per acre.The results of the regression are:
A)Predict the crop yield per acre if x₁ is 5,x₂ is 4,and x₃ is the 0.5.
B)Calculate the standard deviation of the difference between the actual crop yield and the estimate of the crop yield.
C)How much of the variation in crop yield is unexplained by the model?

• A)Predict the crop yield per acre if x₁ is 5,x₂ is 4,and x₃ is the 0.5.
• B)Calculate the standard deviation of the difference between the actual crop yield and the estimate of the crop yield.
• C)How much of the variation in crop yield is unexplained by the model?

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Definitions:

Goblet Cells

Specialized epithelial cells found in the respiratory and intestinal tracts, known for their role in producing and secreting mucus.

Cartilage

A firm, flexible type of connective tissue found in various parts of the body, including the joints, ear, nose, and windpipe.

Ciliated

Ciliated refers to cells that have fine hair-like structures called cilia on their surface, which are involved in movement or the transport of materials over the cell surface.

Secondary Bronchus

Branches of the bronchi that lead air into each lobe of the lungs for gas exchange; these are subdivisions of the primary bronchi.