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Standard Z Score Table / How do you find the Z score such that the area under the ... : How is the z score used? . Use the positive z score table below to find values on the right of the mean as can be seen in the graph alongside. Use the standard normal distribution table to look up the areas that go with the two corresponding positive z scores. Statistics are handy when it comes to making predictions, but to make accurate predictions, you need to know how reliable your results are. Therefore, without having to estimate or rely solely on the empirical rule, we can find the probability for any data set that is normally distributed. Now we would like to know how well george performed compared to his peers. This statistics video tutorial provides a basic introduction into standard normal distributions. Now we would like to know how well george performed compared to his peers. Therefore, without having to estimate or rely solely on the empirical rule, we can find the pr...