Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 258
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:
Eli Manning's private equity firm acquires licensing company for NFL Flag in bet on youth sports
CrowdStrike narrowly beats estimates on AI tailwinds, but stock falls 10%
India's viral 'Cockroach' party has millions of followers. What investors need to know
Senate GOP strips up to $1B for Trump ballroom security from immigration enforcement bill
I want control of my Keyboard Shortcuts (Windows)
Movie: Escape from Alcatraz
Star City: A Bear on a Chain
Book: The Serviceberry: Abundance and Reciprocity in the Natural World
Amazon engineers in Seattle slam employer for building AI data centers while laying off 30,000 staffers
SpaceX IPO hype has traders flocking to this mid-cap stock