Here's a problem you can face; if you want to find an equation or a formula (like in the previous examples) that models certain values or numbers? What can you do? You won't be able to use Geogebra because you're trying to model the relation between some values, not a picture or a logo.
Here comes the "REGRESSION"
So regression is the statistics that determine whether there's a relation between two variables. And if there's a relationship between them, regression helps us identify the strength of this relation and whether it's positive or negative.
For example, you can use regression to know the relation between the height of a point from which you threw a ball and the time the ball took to hit the ground. You can find the relation by collecting data from the experiment. Then you plot this data and here you go! you get the relationship between the two variables and how strong or weak it is!
This is how a regression looks like:
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| Example of a strong relationship between two variables. |
Remember, sometimes you might not find the plotted points forming a line or even close to forming one, which means there's no relationship between the two variables you're investigating about.
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