Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 546
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:
Recent AI agent experiments reveal a risky future of machine 'teamwork' inside corporations
Poppi founders are going after PepsiCo's Gatorade with new beverage startup Jetty
Credit feels harder to get. Here’s what to do before applying for a new credit card
Why the prognosis for healthcare stocks is uncertain ahead of Congress’ new makeup
In search of the most beautiful, the most perfect calendar
18th c dance cloths
Book: Snap
VisionQuest: Firewall
Trump says renewed Iran strikes ‘highly unlikely’ if talks progress but warns he could still strike
Stock futures climb as investors eye AI trade, brace for more data and earnings: Live updates