What Is the Z Score Table

A z-table, also called the standard normal table, is a mathematical table that allows us to know the percentage of values below (to the left) a z-score in a standard normal distribution (SND). … A standard normal distribution (SND).

What is the Z-table in statistics?

A z-table is a table that tells you what percentage of values fall below a certain z-score in a standard normal distribution. A z-score simply tells you how many standard deviations away an individual data value falls from the mean. It is calculated as: z-score = (x – μ) / σ

What does z-score tell you?

Z-score indicates how much a given value differs from the standard deviation. The Z-score, or standard score, is the number of standard deviations a given data point lies above or below mean. Standard deviation is essentially a reflection of the amount of variability within a given data set.