Problem 2 - Total, marginal, and average product

The following table summarizes the short-run relationship between a firm's total labour input and its total output. SHOW YOURWORK.

Labour Input	Total Product	Marginal Product	Average Product
0	0	---
1	26
2	66
3	96
4	116
5	129
6	139
7	138
8	129

Fill in the columns labeled "Marginal Product" and "Average Product."

Over what range of labour input does the firm experience increasing marginal returns? Diminishing marginal returns? Negative marginal returns?