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![]() The probability associated with a Z-score of. Press and locate the ShadeNorm( command and press.Set your window settings, by pressing and setting your values to xmin = - 5, xmax = 5, ymin = -.1 and ymax =.1 can be found by entering the following: On TI-84 Plus C Silver Edition, the area under the standard normal curve for a z-value of. Z-scores can be looked up in a table (z-table) to find the area under the standard normal curve (or probability) to the left of the z-value. Where x is the observation, m is the mean and s is standard deviation.Ī standard observation is used to determine how many standard deviations the original observation falls from the mean. The formula for determining the Z-score is: How do I compute the Z-score on TI-84 Plus C Silver Edition?Ī Z-score is a value obtained when data from a symmetric distribution is standardized. Solution 34508: Computing the Z-Score on a TI-84 Plus C Silver Edition.
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