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9 January, 09:39

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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  1. 9 January, 10:46
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    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.
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