The z Score Probability calculator computes the area under the Normal Distribution curve to the left of a z SCORE. Probability & Normal Distribution This equates to the probability of an event with a lesser z SCORE.
INSTRUCTIONS: Enter the following:
Area Under the Normal Curve: The calculator returns the area under the Normal Distribution curve to the left of the z SCORE. This is equivalent to the probability of an event with a z SCORE less than the entered value. It ranges from 0.00001 to 0.99999.
The z SCORE Probability function is a prominent feature with other statistical functions in the College Level Statistics Calculator (Stat Calc).