Indicate which of the following are cross-section data. 1. food bill of a family for each month of 2015. 2. gross sales of 200 ice cream parlors in july 2015. 3. number of cars sold each year by general motors from 1980 to 2015. 4. salaries of 50 employees. 5. number of supermarkets in each of 40 cities as of december 31, 2015.

Out of the given examples, the following are examples of cross-section data: Food bill of a family for each month of 2015: The data is associated with a specific time period and refers to a specific entity. Gross sales of 200 ice cream parlors in July 2015: A specific time period has been referred to along with a specific product. The number of cars sold each year by General Motors from 1980 to 2015: The data is limited to a period of time and only concerned with a specific segment of assets. The number of supermarkets in each of 40 cities as of December 31, 2015: The data collected relates to a specified point of time.