A Z-score calculator is a statistical tool used to determine the Z-score of a data point within a data set. Using it simplifies this process by automating the computation, making it easier to analyze and interpret data.

The Z-score, also known as a standard score, measures the number of standard deviations a data point is from the mean of the data set.

How to Calculate Z-score?

This calculator computes the Z-score of a normal distribution.

Z-Score Probability Range Calculator

This calculator computes the probability for any given range between two Z-scores (left bound Z1 and right bound Z2).

How Does the Z-score Calculator Help?

Our tooik aids in quickly understanding the statistical significance of your data, facilitating tasks such as hypothesis testing, identifying outliers, and interpreting survey results. By automating the calculation, it saves time and reduces the potential for errors in manual lookups, making it easier to make informed decisions based on statistical data.

How to Use the Calculator?

The calculator computes the Z-score using the input data provided (the observed value, the sample mean, and the standard deviation) and then determines the associated probability so that you don’t have to look up a Z-table.