Donald Rubin - 2025 ACF Regionals

Question

Per a model named for this statistician, the fundamental problem of causal inference states that it is impossible to observe the effect of more than one treatment on a subject and to directly observe causal effects. For 10 points each:

[10h] Name this Harvard statistician whose causal model uses Jerzy Neyman’s (“YAIR-zhih NAY-min’s”) potential outcomes framework and a probabilistic assignment mechanism to estimate missing counterfactuals.

ANSWER: Donald Rubin [or Donald Bruce Rubin]

[10m] When non-compliers exist, these variables can be used to estimate causal relationships. These variables must be correlated with endogenous explanatory variables and are subject to the exclusion restriction.

ANSWER: instrumental variables [or IV]

[10e] Non-compliance can necessitate adjusting for post-treatment covariates by using the stratified form of this technique. This technique involves selecting individuals at random from a population.

ANSWER: sampling [accept stratified sampling]

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Summary


California	2025-02-01	Y	3	6.67	67%	0%	0%
Florida	2025-02-01	Y	3	6.67	67%	0%	0%
Lower Mid-Atlantic	2025-02-01	Y	6	11.67	100%	17%	0%
Midwest	2025-02-01	Y	6	10.00	100%	0%	0%
North	2025-02-01	Y	3	10.00	100%	0%	0%
Northeast	2025-02-01	Y	5	14.00	100%	20%	20%
Overflow	2025-02-01	Y	5	12.00	100%	20%	0%
South Central	2025-02-01	Y	2	15.00	100%	50%	0%
Southeast	2025-02-01	Y	4	10.00	100%	0%	0%
UK	2025-02-01	Y	10	12.00	100%	20%	0%
Upper Mid-Atlantic	2025-02-01	Y	8	12.50	100%	25%	0%
Upstate NY	2025-02-01	Y	3	13.33	100%	33%	0%

Data


Duke	Virginia Tech A	0	0	10	10
Chicago A	Illinois A	0	0	10	10
Illinois B	Chicago D	0	0	10	10
Texas A	Texas B	0	0	10	10
Georgia Tech C	Georgia Tech A	0	0	10	10
Tennessee A	Vanderbilt A	0	0	10	10
Columbia C	Haverford A	0	0	10	10
John Jay College	Maryland A	0	10	10	20
UCSD	UCLA	0	0	0	0
Valencia A	Florida B	0	0	10	10
Florida A	Florida State A	0	0	10	10
Wake Forest	Liberty A	0	0	10	10
UNC B	Liberty B	0	0	10	10
Virginia A	South Carolina	0	10	10	20
UNC C	Liberty C	0	0	10	10
UNC D	William & Mary	0	0	10	10
Chicago C	Illinois C	0	0	10	10
Indiana A	Indiana B	0	0	10	10
WashU B	Missouri	0	0	10	10
WashU A	Missoui S&T	0	0	10	10
BU	UMass Boston	0	0	10	10
Harvard A	Brandeis A	10	10	10	30
Purdue	Georgetown B	0	0	10	10
Georgetown A	Iowa	0	0	10	10
Notre Dame C	Northwestern A	0	0	10	10
Northwestern B	Notre Dame B	0	10	10	20
Stanford B	Notre Dame A	0	0	10	10
ASU	TAMU	0	10	10	20
Alabama A	Louisville A	0	0	10	10
Bruin A	Georgia Tech D	0	0	10	10
Cambridge B	Warwick B	0	10	10	20
Cambridge C	Warwick A	0	0	10	10
Bristol	Cambridge D	0	0	10	10
Oxford C	LSE	0	10	10	20
Sheffield	Imperial B	0	0	10	10
Southampton A	Oxford A	0	0	10	10
Southampton B	Manchester	0	0	10	10
Columbia B	NYU A	0	0	10	10
Johns Hopkins A	Vassar A	0	0	10	10
Penn A	Maryland B	0	10	10	20
Yale A	NYU B	0	0	10	10
Penn B	George Washington B	0	0	10	10
Rutgers A	George Washington A	0	0	10	10
Cornell D	Binghamton A	0	0	10	10
RIT A	ESF A	0	10	10	20
Claremont A	Claremont B	0	0	10	10
UC Berkeley B	UC Berkeley A	0	0	10	10
UCF C	UCF B	0	0	0	0
Minnesota B	Carleton	0	0	10	10
Iowa State	Wisconsin A	0	0	10	10
Winona State	Wisconsin B	0	0	10	10
Harvard B	Brandeis B	0	0	10	10
Dartmouth A	Brown A	0	0	10	10
MIT A	Tufts A	0	0	10	10
Cambridge A	Cambridge E	0	0	10	10
Oxford B	Durham	0	0	10	10
Imperial A	NYU C	0	0	10	10
RIT B	Cornell C	0	0	10	10