Introductory Econometrics: A Modern Approach 6th Edition by Jeffrey M Wooldridge

Exercise 9

Suppose the yield of a certain crop (in bushels per acre) is related to fertilizer amount (in pounds per acre) as

(i) Graph this relationship by plugging in several values for fertilizer.

(ii) Describe how the shape of this relationship compares with a linear relationship between yield and fertilizer.

Step 1 of 2

The following equation shows the relation between yield of crop and fertilizer:

(i) The following graph shows the relation:

Yield

120

50 100 150

Fertilizer