How to find the area under the normal distribution curve (between 0 and any z-score)
There are a few ways to find the area under a normal distribution curve between 0 and any z-score using a z-table. Once you know how to read the table, finding the area only takes seconds!
If you are looking for other variations (finding the area for one tail, or between two z-scores, see this normal distribution curve index).
Step 1: Look in the z-table for the given z-score by finding the intersection. For example, if you are asked to find the area between 0 and 0.46, look up 0.46.* The table below illustrates the result for 0.46 (0.4 in the left hand column and 0.06 in the top row. the intersection is .1772).
*note. Because the graphs are symmetrical, you can ignore the negative z-scores and just look up their positive counterparts. For example, if you are asked for the area of 0 to -0.46, just look up 0.46.