Z Score -1.645

We looked up the Z Score for -1.645 in our Normal Distribution Tables with Z Scores so you don't have to!

First, note that a Z Score of -1.645 means that your statistic is -1.645 standard deviation to the left of the mean on a bell curve. Here is a Bell Curve so you can visualize where -1.645 is on a bell curve.

We used three different distribution tables, and we will give you the -1.645 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 -1.645 Z score is displayed here:

0.450015094460879
= 45.0015%

Cumulative
This gives you the probability of the area below the Z Score. The cumulative probability and percentile for a -1.645 Z score is displayed here:

0.0499849055391214
= 4.9985%

Complementary cumulative
This gives you the probability of the area above the Z Score. The complementary cumulative probability and percentile for a -1.645 Z Score is displayed here:

0.950015094460879
= 95.0015%

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 -1.644
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.