Every form of testing and measurement relies on the ability to trust the mechanism or process that assesses the outcome of a test. For example, when you take a package to a shipping company you rely on its scale for an accurate weight that results in an appropriate shipping fee. If the scale registers the wrong weight – the same or a different incorrect measurement each time – you’re dealing with the forms of error referred to as “unsystematic” or random and “systematic” or predictable. Writer Bio
