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Differences in resource allocations or opportunities that arise within or between countries.

2 votes
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A question about "welfare independence"

The proof of this is a bit involved but not too hard. You can find it in the beautiful paper of Goldman and Uzawa, (1964), A note on separability in demand analysis, Econometrica, 387-398. It is basic …
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3 votes
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An updated version of oxfam top 1% wealth share evolution to 2021

Here is the last chart of the 2021 global wealth report of Credit Suise from which Oxfam got their data. From this, it is clear to see that there is not so much a trend for the top 1% (although the l …
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1 vote

Significance Test for Inequality Index

You could use the $\delta$-method to get the standard deviation. Let $X_0$ and $X_1$ be the random variabled denoting income in periods $0$ and period $1$. Set $Y_0 = X_0 \ln(X_0)$ and $Y_1 = X_1 \ln( …
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4 votes
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Dealing with integrals in econ models

The Lagrangian is the following: $$ L = \left(\int_0^1 C_t(i)^{1 - \frac{1}{\varepsilon}}di \right)^{\frac{\varepsilon}{\varepsilon-1}} - \lambda\left(\int_0^1 P_t(i) C_t(i) di - Z_t\right) $$ Let $\l …
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