
We looked up the Z Score for -3.986 in our Normal Distribution Tables with Z Scores so you don't have to!
First, note that a Z Score of -3.986 means that your statistic is -3.986 standard deviation to the left of the mean on a bell curve. Here is a Bell Curve so you can visualize where -3.986 is on a bell curve.

We used three different distribution tables, and we will give you the -3.986 Z Score probability, percentile, and explanations for all three.
Cumulative from mean
This gives you the probability of the area from the mean to your Z Score. The cumulative from-mean probability and percentile for a -3.986 Z score is displayed here:
0.499966401744245
= 49.9966%
Cumulative
This gives you the probability of the area below the Z Score. The cumulative probability and percentile for a -3.986 Z score is displayed here:
0.0000335982557553294
= 0.0034%
Complementary cumulative
This gives you the probability of the area above the Z Score. The complementary cumulative probability and percentile for a -3.986 Z Score is displayed here:
0.999966401744245
= 99.9966%
Z Score Table Lookup
Here you can submit Z Scores between -3.999 and 3.999 for us to look up in our Normal Distribution Tables.
Z Score -3.985
Here is the next Z Score we looked up in our Normal Distribution Tables.
The percentiles on this page are rounded to the nearest 4 decimals.
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