Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 426
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:
Broadcom debt deal expected to reach upwards of $70 billion, sources say
As GOP warns data centers put Ohio Senate seat at risk, Husted defends energy policy
Energy sector is in focus because of Iran, AI and California. Here are hedge funds' top plays
Big week coming up with PCE, Nvidia earnings and then Jackson Hole. Here's what to expect
Answered: The content and articles of my q2a site are being pulled by fake sites. Can you help me to solve this problem?
Movie: Meda or The Not So Bright Side of Things
Movie: Camp
Movie: The Selfish Giant
Six investors reveal the biggest market risks — and one strategy they agree on
Supreme Court allows Trump to continue White House ballroom construction for now