![]() In this case, the value is 0.99379, which is equivalent to 99.379%. Read the value at their intersection point. (Step 4): Move right along the row you identified in Step 2 above and downwards along the column you identified in Step 3 above.(Step 3): Check the top row for the value with a “0”.(Step 2): Check the first column of the Z-score chart for the value “2.5”.(Step 1): Write your Z score in two decimal places.The first column of the probability z score table shows the Z-Value with the first decimal place, while the top most row shows the Z’s value second decimal place.įor better understanding, let us illustrate this with an example where you are asked to read the probability of a Z score of 2.5. Each z score value to be checked on the table should be rounded to two decimal places. The probability Z-score table is composed of columns and rows which depict probability values. How does a probability z score table work? The Z-score table is also known as the normal score, distribution table, normal distribution chart, normal distribution chart z score, standard z score chart, standard normal table, unit normal table, Z-Value, bell curve, Standardized score, Standardized variable, or the Altman Z-score. A Z score table or chart gives the probabilities of different z -scores.
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