Delta method

The Delta Method is a way to learn about how much something is changing. It looks at two different points in time and compares them - for example, if you wanted to find out if a population of animals is growing, you can use the Delta Method. First, you would count the number of animals at one point in time. Then, you would count them again at a later point in time. The difference between the two numbers, that is the "Delta", is the amount that the population has changed.