An example of a randomized controlled experiment is when
A) households receive a tax rebate in one year but not the other.
B) one U.S. state increases minimum wages and an adjacent state does not, and employment differences are observed.
C) random variables are controlled for by holding constant other factors.
D) some 5th graders in a specific elementary school are allowed to use computers at school while others are not, and their end-of-year performance is compared holding constant other factors.
Question 2
Studying inflation in the United States from 1970 to 2006 is an example of using
A) randomized controlled experiments.
B) time series data.
C) panel data.
D) cross-sectional data.
Overview of a computer-controlled high-pressure common rail V-8 diesel engine.
Normal combustion is a smooth, controlled burning of the air–fuel mixture.
Basic Design of the Driving and Cell Phone Distraction Experiment
Counterbalancing in the Predator Experiment
A Mental Model of the Craftsman Experiment
Ramey's study, children from poverty-level families IQ experiment