Seriously. I will need it for work. I haven’t been able to understand that shit from any online resource until now. Please ELI5
In: 380
You can put certain information on a grid, like houses on city blocks. So imagine you take a map and put a dot where each of your friends’ houses are. That’s like putting points on a graph. Now imagine you want to run a string-can telephone to all of your friends houses and you want the main string to go in a straight line. You could take a ruler and draw straight lines on the map and then measure how close the main string line gets to each of the dots you made. There’s a “best” line that gets closest to all of the dots on average. You can use math to find out what that line is basically by taking the distance from each dot from the line and timesing it by itself (so you only deal with positive numbers to make things easier) and then trying to find the line that has the lowest total distance from all the dots.
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