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Mathematics, 26.07.2020 01:01 isabhb4227
Consider a regression study involving a dependent variable y, a quantitative independent variable x1, and a categorical independent variable with three possible levels (level 1, level 2, and level 3). How many dummy variables are required to represent the categorical variable? Consider the following regression equation relating x 1 and the categorical variable to y. E(y) = 0 + 1 x 1 + 2 x 2 + 3 x 3 Enter the values of dummy variables x 2 and x 3 that are used to indicate the three levels of the qualitative variable. Level x 2 x 3 1 Select Select 2 Select Select 3 Select Select Interpret the parameters in your regression equation. 1 is the change in E(y) to a 1 unit change in Select holding the categorical variable constant. 2 = Select 3 = Select
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Consider a regression study involving a dependent variable y, a quantitative independent variable x1...
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