The accompanying graphs depict pth-order polynomials for one quantitative independent variable.

a. For each graph, identify the order of the polynomial. 

b. Using the parameters β₀, β₁, β₂, etc., write an appropriate model relating E(y) to x for each graph.

c. The signs (+ or -) of many of the parameters in the models of part b can be determined by examining the graphs. Give the signs of those parameters that can be determined.

Transcribed Image Text:

ii. Ely) i. Ely) iv. E(y) iii. Ely)