What factors should be considerable for in come measurements analysis?

there are four  factors1-estimate2-accounting  methods3-disclosure incentives4-different    needs of users  

I agree with answers provided

1. Conventional methods.

2.Approximations

3.Accounting tools and professional accounting.

4.Estimations

5.% of profit less expenses

6.income/profit received less expenses.

7.Using proportions and ratios based on past experiences and/ or on the basis of agreements.

8.Guess work

AGREE WITH YOUR ANSWER  

Agreed with colleagues answers