Christel Vermeersch

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# Christel Vermeersch - PowerPoint PPT Presentation

METHODS. Christel Vermeersch. The World Bank. IMPACT EVALUATION. Introduction to Parallel Tracks. This morning: Parallel Sessions. Covering: methods for evaluating impact (the how ). The content of the policy and technical tracks is the same.

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Presentation Transcript

METHODS

Christel Vermeersch

The World Bank

IMPACT EVALUATION

Introduction to Parallel Tracks

This morning: Parallel Sessions

Covering: methods for evaluating impact (the how)

The content of the policy and technical tracks is the same

It’s just the approach that is different

• Policy track: intuition
• Technical track: intuition + econometrics
What session should you attend?
• multivariable regression in a statistics and/or econometrics course.
• If you have studied…
• Design of impact evaluation methodologies.
• Data analysis.
• …Then please consider attending the technical sessions.
What session should you attend?
• multivariable regression in a statistics and/or econometrics course.
• If you have NOT studied…
• Using evaluation results to inform policy making.
• Management and oversight of evaluations.
• Contracting of consultants to implement evaluations.
• Or if in doubt…
• …Then please consider attending the policy sessions.
Quiz: Technical question 1

In the following equation:

y=α0 + β1x1 + β2x2 + + ε

y is…

α0is…

x2 is…

εis…

Quiz: Technical question 2

In the following two expressions,

b=(X’X)-1X’y

b=

∑(xi - x) (yi - y)

¯

¯

∑(xi - x)2

¯

b is…

A naive estimator

The OLS estimator

The XLS estimator

The impact estimator for large samples

Don’t know

Quiz: Technical question 3

The sum of 3 independent normally distributed variables has what kind of distribution?

A student-t distribution

A normal distribution

A Poisson distribution

A strange distribution

Don’t know

Quiz: Technical question 4

Under the Gauss conditions, the least squares estimator is:

BLUE

YELLOW

RED

None of the above

Don’t know

Quiz: Results
• Got all 4 questions correct?
• Otherwise,
• please consider attending the technical sessions.

please consider attending the policy sessions.