Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 442
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 higher returns
Larry Ellison nixes plan to offload up to $7.5 billion worth of Oracle stock
Jim Cramer questions Anthropic CEO's slowdown manifesto and puts forth an action plan
Movie: Lethal Weapon 2
Movie: Stage Fright
Any recommendations of what to do in Paris.
Did Jack pay a bribe to the police officer?
A puzzle! How did this NZ fence catch fire?
Trump says U.S. may keep Iranian oil 'like Venezuela' as Gulf-Iran Hormuz talks stall
OpenAI rules out IPO this year as Altman, Musk & Amodei warn AI is moving too fast