Enter Probability Statement (P(z < a), P(z > b), or P(a < z < b) Click here to calculate a z-score


  

How does the Z Score Lookup Calculator work?
Free Z Score Lookup Calculator - Given a Z-score probability statement from the list below, this will determine the probability using the normal distribution z-table.
* P(z < a)
* P(z <= a)
* P(z > a)
* P(z >= a)
* P(a < z < b) Calculates z score probability
This calculator has 1 input.

What 1 formula is used for the Z Score Lookup Calculator?

Z = (x - μ)/σ/√n

For more math formulas, check out our Formula Dossier
What 4 concepts are covered in the Z Score Lookup Calculator?
distribution
value range for a variable
probability
the likelihood of an event happening. This value is always between 0 and 1.
P(Event Happening) = Number of Ways the Even Can Happen / Total Number of Outcomes
z score
the number of standard deviations from the mean a data point is. Also known as a standard score
z score lookup
Example calculations for the Z Score Lookup Calculator