Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 208
I'm trying to show a summation for observations i to n, starting with i = 1, that is only applied when another variable (treatment) is equal to 0. What's the correct notation for that?

The idea that I'm trying to turn into mathematical notation is "Each control unit in a given stratum has an uncorrected weight equal to (the unit's survey weight divided by the sum of all survey weights of control units in that stratum) multiplied by (the sum of all survey weights of treatment units in that stratum)," if that helps for context. I feel very self-conscious asking this question; please be kind.
Number of Comments
Please click Here to read the full story.
 
Other Top and Latest Questions:
Top Wall Street analysts recommend these 3 dividend stocks for stable income
Iran focus at Trump-Xi summit may delay progress on tariffs, rare earths
Amazon Prime Day 2026 is in June. Get a $150 Amazon gift card and extra rewards with the right credit card
Michael Burry says the market today feels like 'the last months of the 1999-2000 bubble'
Hi I'm new and i want to know how many points are required to edit the user profile? Thank you guys
Passengers begin evacuating from cruise ship hit by hantavirus
For All Mankind: The Sirens of Titan
Iran says it has sent its response to the U.S. peace proposal
Book: Platform Decay
MV Hondius hantavirus outbreak: A luxury expedition cruise boom and new world of remote travel risks