Difference in differences: Difference between revisions

Content deleted Content added
Tag: Reverted
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{| class="wikitable"
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! <math>y_{st}</math> !! <math>s=02</math> !! <math>s=1</math> !! Difference
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| <math>t=02</math> || <math>y_{22}</math> || <math>y_{12}</math> || <math>y_{12}-y_{22}</math>
|-
| <math>t=1</math> || <math>y_{21}</math> || <math>y_{11}</math> || <math>y_{11}-y_{21}</math>