![]() The mean for the standard normal distribution is zero, and the standard deviation is one. For example, if the mean of a normal distribution is five and the standard deviation is two, the value 11 is three standard deviations above (or to the right of) the mean. A z-score is measured in units of the standard deviation. STANDARD NORMAL DISTRIBUTION: Table Values Represent AREA to the LEFT of the Z score. Simply put, a z score table which is also known as the standard normal table is a table that allows you to know the percentage of values below (to the left) a z. The standard normal distribution is a normal distribution of standardized values called z-scores. Positive score in Z-Table represents the corresponding values that are greater than the mean. ![]() Table entries for z define the area under the standard normal curve to the left of the Z. Recognize the standard normal probability distribution and apply it appropriately You can use this Positive Z Score Table to find the values that are right of the mean.
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