Although GDP is a reasonably good measure of a nation's output, it does not necessarily include all transactions and production for that nation. Which of the following scenarios are either not accounted for or measured inaccurately by either the income or the expenditure methods of calculating GDP for the United States? Check all that apply.

a. The quality of goods available to consumers.
b. The value of baby-sitting services, when the babysitter is paid in cash and the transaction isn't reported to the government.
c. The parts of a car manufactured in the United States that are produced in Canada.
d. The loss of enjoyment people incur when scenic land is converted to commercial use.

GDP calculated using the expenditure approach = Consumption spending by households + Investment spending by businesses + Government spending + Net export

Net export = exports – imports

When exports exceed import there is a trade deficit and when import exceeds import, there is a trade surplus.

Items not included in the calculation off GDP includes:

1. services not rendered to oneself

2. Activities not reported to the government

3. illegal activities

4. sale or purchase of used products

5. sale or purchase of intermediate products

6. quality of goods and services

7. externalities

The car parts produced in the US would be added to GDP as parts of exports