Dhrumil Mehta
Database Journalist, Politics @ FiveThirtyEight
Hello, my name is...
dhrumil.mehta@columbia.edu
@datadhrumil
@dmil
Currently
Associate Prof. @ Columbia Graduate School of Journalism
Visiting Associate Prof. @ Harvard Kennedy School
Previously
Database Journalist, Politics @ FiveThirtyEight
Database Journalist, Politics
https://www.monmouth.edu/polling-institute/reports/monmouthpoll_ga_102820/
Polling error tends to be correlated in a given election cycle
What is included?
What is excluded?
Methodological choices / assumptions
Parameters are numbers that summarize data for an entire population. Statistics are numbers that summarize data from a sample, i.e. some subset of the entire population.
- source: David Gurney
Remember "margin of error" is only the margin of sampling error. There are other sources of error as well.
They're one piece of information that can help you better understand state of a race.
Don't ignore them. But don't worship them.
Ariel Edwards Levy - CNN (formerly HuffPost)
@aedwardslevy
G Elliott Morris - The Economist
@gelliottmorris
Lenny Bronner - Washington Post @lennybronner Nate Cohn - New York Times @Nate_Cohn Nate Silver - FiveThirtyEight @NateSilver538
dhrumil.mehta@columbia.edu
@datadhrumil
@dmil
By Dhrumil Mehta
Saying hello to students