What kinds of Commands should I use for the exact Gini coefficient? (inequal7, ineqdeco and ainequal)

[Changyon Han]

Hello, all!

What kinds of Commands should I use for the exact Gini coefficient? (inequal7, ineqdeco and ainequal)

What is the difference in Gini coefficient between the ineqdeco and other commands?

Thank you in advance for your help and advice.

[Changyon Han]

Files Attached

[Stephen Jenkins]

Be aware that different inequality programs may use different formulae, and only some use the correct approach to dealing with ties in the data. There are different treatments of zero values too. You do not provide sufficient information for us to assess definitively whether these points are the issue here, and I refuse to open your attachments. Please READ THE FORUM FAQ! That tells you how to report Stata commands and output, and to provide sample data using -dataex-.

I suspect the different treatment of zero values is one of the issues here -- reread your output carefully. (If you rerun the calculation with -ineqdec0-, you may get the same answer as -inequal7- and -ainequal-.)

As author of -ineqdeco- and -ineqdec0- (both on SSC), I have skin in this game, and will assert that their calculations are correct. Years of user use attest to this. Moreover, the calculations provide answers the same as the most up-to-date program for inequality calculations by the master programmer, Ben Jann, namely -dtstat- (SSC).