Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 548
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:
Cathie Wood 'always feels better when the market is worried' — here's why
Mark Cuban says he doesn’t ‘give a f---' about growing his net worth—a healthy mindset for non-billionaires too, a financial therapist says
Democrats amp up Trump investigation threats, Blanche counters he may probe lawmakers
18th c dance cloths
Teach me more about drugs (lots of drugs)
Movie: Return of the Living Dead Part II
Dead-End Job: Limited Series: Full First Season
Book: Snap
The Great British Bake Off: Free From Party Week
The Gilded Age: Ring the Bells