Standard deviations we are from the mean, we can determine what percentage of a sample set falls into this bracket, as long as the distribution is normally distributed. Statistically speaking, once we know how many So, again based on the z score, we can determine how many standard deviations we are from the mean. If the z score is 3, then the raw score obtained is 3 standard deviations above the mean. If the z score obtained is 2, then the score obtained If the z score is -1, then the score is 1 standard deviation below the mean. So, for example, if we have a z score of 1, then the score obtained is 1 standard deviation above the mean. The z score, thus, tells us how far above or below average a score is from the mean by telling us how many standard deviations it lies above or The z score is a numerical value which represents how many standard deviations a score is above or below the mean. This Area Under the Curve Calculator calculates the area under the curve based on the z-score entered.
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