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ta https://blackboard ncat.edu/webapps/assessment takeaunchJsp?course assessment id=-148268 1&course; secure de 3527019- Status: Binary variables O exclude certain individuals from your sample e can take on more than two values are generally used to control for outliers in your sample o can take on only two values QUESTION 8 in the model Yi- 8o+81x+82x2+83(xX2)u the marginal effect of Y with respect to xj is e 81 e 81 +83x1 QUESTION9 You have estimated the following equation ATestScore 607.3+3.85 Income-0.0423 Income where TestScore is the average of the reading and math scores on the Stanford 9 standardized test administered to 5th gr in 420 California school districts in 1998 and 1999. Income is the average annual per capita income in the school district, n thousands of 1998 dollars. The equation O suggests a positive relationship but decreasing between test scores and income for most of the sample O is positive until a value of Income of 610.81 does not make much sense since the square of income is entered O suggests a positive relationship between test scores and income for all of the sample Click Save and Submit to save and submit. Ctiek Save All Answers to save all ansuers

Explanation / Answer

7) option D is correct. Bonary variables can take only two value.

Q8 option D. differentiate wrt X1:

dY/dX1 = B1+B3

Q9: option a.

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