6: Sample size and power calculations

This presentation explores methods for identifying the right sample size for randomized evaluations so that results are defensible.

This is the sixth in a series of lectures produced by the Poverty Action Lab and the Massachusetts Institute of Technology.

Contents

  • I. Hypothesis testing
  • II. Type I and Type II Errors
  • III. Standard errors and significance 
  • IV. Power
  • V. Effect size
  • VI. Factors that influence power

Sources

Olken, B. (2009). 6: Sample Size and Power Calculations, Abdul Latif Jameel,  Poverty Action Lab Executive Training: Evaluating Social Programs Lecture Notes,  Massachusetts Institute of Technology (MIT). Retrieved from https://www.lej4learning.com.pk/single-lecture/10902

Massachusetts Institute of Technology (MIT) https://ocw.mit.edu/

Poverty Action Lab (PAL) http://www.povertyactionlab.org/

'6: Sample size and power calculations' is referenced in: