Question

The average income is not a perfect base to compare the development of the country comment on it

Answer 1

Yes because it doesn't provide distribution of income and it also ignores important factors like life expectancy , birth rate , death rate .. e.t.c.

Answer 2

Yes,
as we can't understand how many people are unemployed or how many people are employed, ex : we can't judge with only average how many students are fail or pass