Distribution of wealth. Refer to Problem.
(A) Use cubic regression to find the equation of a Lorenz curve for the data.
(B) Use the cubic regression equation you found in Part (A) and a numerical integration routine to approximate the Gini index of income concentration.
Problem
Distribution of wealth. The data in the following table describe the distribution of wealth in a country:
![2009_Table.png](https://secure.tutorsglobe.com/CMSImages/2009_Table.png)
(A) Use quadratic regression to find the equation of a Lorenz curve for the data.
(B) Use the regression equation and a numerical integration routine to approximate the Gini index of income concentration.