Z Score 1.228

We looked up the Z Score for 1.228 in our Normal Distribution Tables with Z Scores so you don't have to!

First, note that a Z Score of 1.228 means that your statistic is 1.228 standard deviation to the right of the mean on a bell curve. Here is a Bell Curve so you can visualize where 1.228 is on a bell curve.

We used three different distribution tables, and we will give you the 1.228 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 1.228 Z score is displayed here:

0.390276516011022
= 39.0277%

Cumulative
This gives you the probability of the area below the Z Score. The cumulative probability and percentile for a 1.228 Z score is displayed here:

0.890276516011022
= 89.0277%

Complementary cumulative
This gives you the probability of the area above the Z Score. The complementary cumulative probability and percentile for a 1.228 Z Score is displayed here:

0.109723483988978
= 10.9723%

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 1.229
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.