Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 534
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:
Trump administration may let more Russian diesel onto market, energy secretary tells CNBC
Anthropic's IPO could be 'speculative fiction' or a 'generational moment' — investors are split
Boeing shares slide on a disappointing cash flow update. Why this dip is buyable
Stocks making the biggest moves after hours: Visa, Robinhood, NXP, Seagate and more
SK Hynix shares jump 11% after record quarterly profit, outperforming broader market
Grand jury rejects DOJ bid to indict ex-Trump WH aide Cassidy Hutchinson: Reports
How should I handle my kids' "Trump accounts"?
How should I word these emails to sell my deceased husband's domain?
I planned ahead yet am still last minute
Treasury Department announces new Series I bond rate of 5.51% for the next six months