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Christel Vermeersch

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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Christel Vermeersch

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  1. METHODS Christel Vermeersch The World Bank IMPACT EVALUATION Introduction to Parallel Tracks

  2. 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

  3. 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. • If your role is… • …Then please consider attending the technical sessions.

  4. 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. • If your role is… • Or if in doubt… • …Then please consider attending the policy sessions.

  5. Quiz: Technical question 1 In the following equation: y=α0 + β1x1 + β2x2 + + ε y is… α0is… x2 is… εis…

  6. 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

  7. 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

  8. Quiz: Technical question 4 Under the Gauss conditions, the least squares estimator is: BLUE YELLOW RED None of the above Don’t know

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

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