Incomes don’t follow a bell curve, so the choice of mean income is a red flag to me. Imagine you had 9 citizens making 100k and one billionaire, the mean is now 100,090k.
Relatedly, being in the bottom 10% doesn’t necessarily mean the same thing in these different countries, in some of them that might not be below the poverty line so it’s comparing apples and oranges.
Incomes don’t follow a bell curve, so the choice of mean income is a red flag to me. Imagine you had 9 citizens making 100k and one billionaire, the mean is now 100,090k.
Relatedly, being in the bottom 10% doesn’t necessarily mean the same thing in these different countries, in some of them that might not be below the poverty line so it’s comparing apples and oranges.