For a certain population, the regression equation to predict salary (in dollars) from education (in years) is y=2530x + 5200. What are the units of 2530? Choose the correct answer. You have only one attempt.

Question

Mathematics

Messiah

24 September, 07:04

For a certain population, the regression equation to predict salary (in dollars) from education (in years) is y=2530x + 5200. What are the units of 2530? Choose the correct answer. You have only one attempt.

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Answers (1)

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Winston Kennedy · Answer 1

2530 has no units

Step-by-step explanation:

In order to understand the units from a linear equation we need to understand the general equation of a line which is:

y=mx+b where:

m=slope of the line

b=y-intercept.

Comparing the given equation with the general line equation, we noticed that 2530 represents the slope of the line.

Since the slope can be obtained by:

m = (y2-y1) / (x2-x1) whatever the units are, the slope is dimensionless, which means that 2530 has no units.