Self Assessment 4_ Data Analytics Business - MGT-6203-OAN_FB - FA20 (QUESTIONS AND ANSWERS)
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Module
MGT 6203 Special Topics In Mgt
Institution
Georgia Institute Of Technology
Self Assessment 4
Due Sep 30 at 11:59pm Points 10 Questions 10
Available Sep 18 at 8am - Sep 30 at 11:59pm 13 days Time Limit None
Allowed Attempts 2
Aempt History
Attempt Time Score
LATEST Attempt 1 43 minutes 7 out of 10
Correct answers are hidden.
Score for this attempt: 7 out of 10
...
While calculating a difference in difference, we run a regression which is
as follows:
lm( y ~ d1 +d2 + d3) where d1 and d2 are dummy variables and d3 is
their interaction term.
We thus get its coefficients according to the equation: Y = a + b*d1 + c*d2
+ d*d3 . What is the difference in difference estimator?
a+b+c+d
(d-c)-(b-a)
a
d
Question 3 pts
We want to observe the column “y” in the dataset. We divide the
observations into 2 parts, where y_0 is the set of observations of the
control group and y_1 is the set of observations of the treatment group.
(Let function mean(X) gives the mean value of X)
What is the difference estimator given by?
mean(y_1) – mean(y_0)
Covariance(y_1, y_2)
1 – mean(y_1)/mean(y_2)
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