Final answer:
The standard of living is not the same among groups within a single country and can vary greatly between different countries. Comparing the standard of living between countries involves considering factors such as per capita GDP, life expectancy, and access to basic necessities.
Step-by-step explanation:
The statement that 'the standard of living is about the same among groups within a single country although it varies greatly from country to country' is False. While the standard of living can vary greatly between different countries, it can also vary within a single country.
Factors such as income inequality, access to education and healthcare, and quality of infrastructure can all contribute to differences in the standard of living within a country.
To compare the standard of living between countries, economists and researchers use various measures. Some of these include per capita GDP (which measures the average income per person), life expectancy, literacy rates, access to basic necessities like clean water and sanitation, and income inequality.
These measures provide insights into the overall well-being and quality of life in different countries.
It is important to note that the standard of living is a complex and multifaceted concept influenced by numerous factors. While comparing countries can provide valuable insights, it is essential to consider the specific context and nuances of each country's social, economic, and cultural conditions.