![]() Since the standard normal distribution is symmetrical around the mean (which has a Z-score of 0), a Z-score of 0 corresponds to the 50th percentile. The Z-table provides the cumulative probabilities (or percentiles) associated with standard scores. To make this conversion, statisticians often use the standard normal distribution table, commonly known as the Z-table. From Z-score to PercentileĬonverting a Z-score to a percentile is a common practice, especially when one needs to convey the relative standing of a data point in more intuitive terms. For instance, if a score is in the 85th percentile, it means the score is higher than 85% of the other scores in the dataset. Confidence Interval What is a Percentile?Ī percentile, on the other hand, indicates the relative standing of a data point within a dataset. It offers a precise position of individual scores by standardizing the entire dataset, providing a clearer picture of how data is spread around the mean. The Z-score, often termed as a standard score, measures how many standard deviations a data point (or score) is from the mean of a dataset. ![]()
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