Which means that if Z Score = 1 then that value is one standard deviation from the mean. Meaning in simple terms, it is Z Score that gives you an idea of a value’s relationship to the mean and how far from the mean a data point is.Ī Z Score is measured in terms of standard deviations from the mean. But before we take a look at the formula, let us understand what the Z Score is What is a Z Score?Ī Z Score, also called as the Standard Score, is a measurement of how many standard deviations below or above the population mean a raw score is. It is the Z-Score that gets mapped across the Z-Table and is usually either pre-provided or has to be derived using the Z Score formula. To use the Z-Tables however, you will need to know a little something called the Z-Score. Note: Feel free to use and share the above images as long as you provide attribution to our site by crediting a link to How to use the Z Score Formula