Median filter

A median filter is like putting your toys in order from smallest to biggest and then picking the toy that is in the middle. Imagine you have a bunch of numbers, and you want to find the middle one. Instead of adding them up and then dividing by how many there are, you put them in order and just pick the one in the middle.

This works because sometimes one bad number can throw off the average (like if one toy is super big and all the other toys are small) but the middle number won't be affected by that bad number.

So, a median filter helps to smooth out data by using the middle number instead of an average. It's like neatening up your toys and finding the toy that is just the right size to play with.