📚 node [[difference in differences analysis]]

Difference In Differences Analysis

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Compare change in place A with a change vs no change in place B - before and after.

Requires a control group.

City A has taxes change, City B has no tax change.

Want to figure out what vaariables were impacted by tax change in City A.

City B is control group.

illustration of isolation tax change-before

Illustration of isolation tax change-after

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