The Probability between z SCORES calculator computes the area under the Normal Distribution curve between two z SCOREs. Probability & Normal Distribution This equates to the probability of an event in that range.
INSTRUCTIONS: Enter the following:
Area Under the Normal Curve (P): The calculator returns the area under the Normal Distribution curve between the z SCOREs. This is equivalent to the probability of an event occurring between the z SCOREs. It ranges from 0.00001 to 0.99999.
This z Score indicates the number of standard deviations an observation is above or below the mean. The equation for the z Score is:
`z = (x-μ)/σ`
The z SCORE Probability function is a prominent feature with other statistical functions in the(Stat Calc).