Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 436
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:
Obama voices caution on AI, urges Democrats to tackle it, NYT says
China's Xi urges BRICS nations to work towards peace in the Middle East
Movie: Lethal Weapon 3
Book: The Dream Hotel
Movie: Stage Fright
what graphic memoirs would I like to read next?
The 10-year Treasury is closing in on 5%. How it gets there matters more
Cadbury cut two months off its supply chain lead time for a key chocolate-bar ingredient in one move
Z.ai shares tumble over 10% after $5 billion fundraising, its second major raise in two months
In pictures: The U.S. commemorates the 25th anniversary of 9/11