Asurvey was conducted by a research team to investigate how the education level and years of experience are related to the annual income.
based on the survey’s definition, education level is a categorical variable with five possible levels:
high school
college
some college
university
and "graduate
1. how many dummy variables the analyst should add to the regression model in order to capture "education level" as an independent variable?
select one:
a) 5
b) 4
c) 3
d) 2

step-by-step explanation:

answer: the distance

step-by-step explanation:

to calculate the distance d of a line segment with endpoints (x1, y1) and (x2, y2) use the formula d (x2 x1)2 (y2 y1)2. to calculate the midpoint of a line segment with endpoints (x1, y1) and (x2, y2) use the formula

5=812a+9+3

step 1: simplify both sides of the equation.

5=812a+9+3

5=(812a)+(9+3)(combine like terms)

5=812a+12

5=812a+12

step 2: flip the equation.

812a+12=5

step 3: subtract 12 from both sides.

812a+12−12=5−12

812a=−7

step 4: divide both sides by 812.

812a /812 = -7/812

a= -1/116

so the answer is

a=   -1/116