How to calculate z score

 To calculate the z-score of a data point in a dataset, use the formula:

$�=\frac{�-�}{�}$

where:

• $�$ is the data point you want to calculate the z-score for,
• $�$ is the mean (average) of the dataset,
• $�$ is the standard deviation of the dataset.

This formula helps you understand how many standard deviations a data point is away from the mean. A positive z-score indicates the data point is above the mean, while a negative z-score indicates it's below the mean.