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). O How many dummy variables are required to represent the categorical variable? 00 Write a multiple regression equation relating x1, and the categorical variable to y Do NOT use EXCEL Oa 0 2 () there can be two multiple regression equations using each level 1) there can be three multiple regression equations using each level (i) there can be three multiple regression equations using each level Odi 1

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Consider a regression study involving a dependent varlable y, a quantitative
independent variable x1, and a categorical independent variable with three
possible levels (level 1, level 2, and level 3).
OHOW many dummy variables are required to represent the categorical variable?
10 Write a multiple regression equation relating x1, and the categorical variable
to y
Do NOT use EXCEL
Oa 0 2
there can be two multiple regression equations using each level
1) there can be three multiple regression equations using each level
(i) there can be three multiple regression equations using each level
Od 0 1
) there can be two multiple regression equations using each level
Transcribed Image Text:Consider a regression study involving a dependent varlable y, a quantitative independent variable x1, and a categorical independent variable with three possible levels (level 1, level 2, and level 3). OHOW many dummy variables are required to represent the categorical variable? 10 Write a multiple regression equation relating x1, and the categorical variable to y Do NOT use EXCEL Oa 0 2 there can be two multiple regression equations using each level 1) there can be three multiple regression equations using each level (i) there can be three multiple regression equations using each level Od 0 1 ) there can be two multiple regression equations using each level
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