4 ms·
You should add country of residence, otherwise you might get distorted data. Income varies greatly from country to country. For example you might have someone
by nico 17y ago
You should add country of residence, otherwise you might get distorted data. Income varies greatly from country to country.
For example you might have someone with a lot of experience and education but low income in India, and then have someone with not as much education or experience but a lot higher income in the US.