Conditional summation notation
Post date: 2020-08-01 11:00:48
Views: 328
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:
PayPal jumps 16% in premarket on report of Stripe, Advent $53 billion takeover offer
What are other books like these books?
Not really a fan of nature, are you?
Stargate SG-1: Summit Rewatch
Import prices post surprise gain as costs of goods from China hit highest since 2008
Bipartisan group of senators propose Social Security reform process ahead of funding shortfall
Warren Buffett is accelerating his charitable donations with aim to give away Berkshire wealth by 2034
Caution warranted on this red hot AI cloud data stock that's now 'priced for perfection,' says Todd Gordon
Zipline adds ex-Tesla, Uber, Waymo execs to make drone delivery mainstream across U.S.
BMO bank account bonuses: Get up to $1,500