Designing Causal Evaluations-Quiz 5

JavaScript isn't enabled in your browser, so this file can't be opened. Enable and reload.

Email *

1. Which of the following statements about stratified random assignment is true? (Choose all that apply) *

1 point

The more variables that you stratify on, the less balance you tend to have on any one variable

You should not stratify on data that may have measurement error, as this can introduce bias

Sampling weights are necessary when stratifying random assignment to recover unbiased estimates of the treatment effect

You cannot stratify on a continuous variable if every observation has a different value; instead you must form strata of individuals with similar values

Stratified random assignment is usually more efficient than simple random assignment but less efficient than clustered random assignment

None of the above statements about stratified random assignment are true

Required

Suppose that you wanted to stratify random assignment of the EG baseline student list on baseline test performance. One option could be to identify the mean test score, create a binary variable for whether a student scored above the mean or below the mean, and stratify on that binary variable. Implement this treatment assignment, assigning 50% of students to treatment and 50% of students to control, and use the ‘rround’ option in gsample to ensure that the overall assignment is as close to 50/50 as possible.

2. How many students scored above the average baseline test score? *

1 point

3. Conduct a balance test comparing average test scores for your treatment versus control groups. What is the p-value for this test? Round to the nearest 0.01. *

0 points

Now, instead of stratifying on the binary variable for above/below mean performance, stratify on total baseline scores itself.

4. How many strata are there in this random assignment? *

1 point

5. Conduct a balance test comparing average test scores for treatment versus control groups under this alternative treatment assignment. What is the p-value for this test? Round to the nearest 0.01. *

0 points

Submit

Clear form

Never submit passwords through Google Forms.

This form was created inside of Idinsight.org. Report Abuse

Forms