Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 293
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:
Stock market gains minted nearly 1 million new millionaires in 2025, new UBS report says
Why Jim Cramer says investors should 'want to own' this industrial stock
AI agents will soon be able to match human traders, Robinhood CEO tells CNBC
How high hopes for Biden’s student-loan forgiveness plans cost borrowers
Restrictive immigration policies are changing the composition of the healthcare workforce
Google loses fight over record $4.7 billion EU antitrust fine
Adjusting clamping pressure on Schuco barrel hinge
What are the different types of Google Ads campaigns?
Movie: She's the He
Led by Buc-ee’s and new rival Dolly Parton, America’s gas station chains are in a mega-sizing era