Z Value Chart
Z Value Chart. A Z-scores tells how many standard deviation a value or score is from the mean (µ). Table entries for z define the area under the standard normal curve to the left of the Z.
Powered by Create your own unique website with customizable templates. A Z-scores tells how many standard deviation a value or score is from the mean (µ). Lastly, the negative score represents the corresponding values that are less than the mean.
A z-score measures exactly how many standard deviations above or below the mean a data point is.
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This Negative Z Table can help you to find the values that are left of the mean. The critical value of a z score can be used to determine the margin of error, as shown in the equations below:. Z-tables help graphically display the percentage of values above or below a z-score in a group of data or data set.
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