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13 July, 10:57

How would write an equation of a regression line?

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  1. 13 July, 11:22
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    The equation for a regression line is standarly written like this:

    y = a + bx + e

    y is the letter we usually use to denote that this is a (regression) equation we're talking about

    a is the intercept in this case. a tells you what at what value of y would the line start/cross with the y-axis if our x was 0.

    b is the slope. It tells you how steep (or not) would our regression line be.

    e is usually also added but not necessarilly needed. e is used in statistics and tells us what amount of error did our regression line get (because we usually use regression lines to predict data).
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