Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 212
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:
U.S. sanctions companies and individuals in the Middle East and China for helping Iran
Amazon Prime Day 2026 is in June. Get a $150 Amazon gift card and extra rewards with the right credit card
How to take control of the AI data center boom and built it into your own home in the future
Which Database Entry do I alter for Default Theme?
Lakay Nou: Lakay Nou - Montreal charmer featuring the Haitian diaspora
With Netflix new ad-free standard plan at $20, streaming's tipping point into old TV is getting closer
Book: Platform Decay
SEC delay on prediction markets ETFs echoes a long-fought bitcoin fund battle
Why one of the nation's largest auto lenders isn't worried about high vehicle prices or 'forever loans'
MV Hondius hantavirus outbreak: A luxury expedition cruise boom and new world of remote travel risks