Quasi-experimentation A Guide To Design And Analysis Pdf -

"Exactly," Lena said. "And next time, if you can’t randomize, use a — give half the classes the software in Phase 1, the other half in Phase 2. Compare each against itself over time."

But to be rigorous, she added a and used Huber-White robust standard errors (because monthly scores from the same class aren’t independent — a key point from quasi-experimental guides). quasi-experimentation a guide to design and analysis pdf

Hartley laughed. "You quasi-people have a workaround for everything." "Exactly," Lena said