- Ex-ante investment refers to the investment that is planned or anticipated before any actual spending is made. It is based on forecasts or expectations about future income, growth, and economic conditions.
- It represents the desired level of investment that firms or individuals intend to make in an economy, based on their expectations about future profits, interest rates, and economic policies.
The following data represents the income of a country for a year: 
Calculate the National Income (NI) of the country.
The following data shows the number of students in different streams in a school: 
Which type of graph is best suited to represent this data?