Lecture 1

Question 1

What is Selection Bias?

Answer 1

Selection bias means that: your treatment group has different characteristics than your control group

Question 2

What is the purpose with Random Sampling?

Answer 2

Random sampling is performed if you want/need to have a representative sample of a group of individuals/households/firms/ schools/villages.

Question 3

What is the difference between Random Sampling and Random Assignment?

Answer 3

1. Random Sampling is done if we want to have a group of individuals that are representative of a population.
2. Random Assignment does not have the focus that this group has to be representative of a population.
   - – > Instead more focus is put on being randomly allocated to different groups.

Question 4

What are the 8 key steps to take and what do they mean?

Answer 4

1. Design the study carefully
2. Randomly assign people to treatment or control
3. Collect baseline data
4. Verify randomness
5. Monitor process
6. Collect follow-up data
7. Estimate program impacts
8. Assess if.. significantly