Hi all,
Currently, I'm doing a multiple regression, with the totalcases as the dependent variable, while other 6 variables (border, PM, health, popu, totalphy, GDP) are independent. GDP, totalphy (total physicians in a country), health (health expenditure of a country) are calculated using population * per capita or per 1000 indicators (GDP per capita, health expenditure per capita, physicians per 1000) by generating new variable.
The problem is that when I tried to test the equality of coefficients of health and GDP, the result is constraint 1 dropped and there was no F value nor Prob > F. I also test joint significance for 15 pairs of variables and many pairs suffered from constraint dropped.
Can anyone provide me with a detailed explanation and solution? I appreciate every answer given to me.
Array
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