Question

why it is said that the gdp is a index of measurement the strength of an economic

Answer 1

GDP as a measure of economic activity and well being. “Gross domestic product (GDP) is the market value of all final goods and services produced within a country in a given period of time”(Mankiw and Taylor, 2006, p.468). ... Hence, the contribution of each single product to the GDP is measured by its market price.