Statistical process control is a tool used to measure and monitor different details of a process. It uses statistical methods to analyze data collected during the process and to predict and detect any changes that could affect the process. This helps to keep the process stable and consistent which leads to higher quality products and cost savings.
Think of it like this: if you were baking a cake, you would need to follow a recipe so that the cake turns out the same each time. Statistical process control would be a way to measure how closely you are following the recipe, such as checking the temperature of the oven, the amount of ingredients used, and making sure the cakes bake for the same length of time. By doing this, you can make sure your cakes turn out the same each time.