Z Table - Z Score Table Standard Normal Distribution. Unformatted text preview: Table of Standard Normal Probabilities for Negative Z. standard normal table with negatives Z SCORE TABLE - Z Table and Z score calculation. Z scores rely on the standard normal distribution (or Gaussian). Cumulative probabilities for NEGATIVE z-values are shown in the following table: z. To calculate the Z-Score of these negative values we refer Negative Z Score Table. Standard Normal Distribution (Z) Table 1: Standard normal distribution. Negative Standard Normal Distribution Table. As a result, the standard deviation used to calculate the Sharpe ratio may understate tail risk. Python Dictionaries Access Items Change Items Add Items Remove Items Loop Dictionaries Copy Dictionaries Nested Dictionaries Dictionary Methods Dictionary Exercise Python If.Else Python While Loops Python For Loops Python Functions Python Lambda Python Arrays Python Classes/Objects Python Inheritance Python Iterators Python Polymorphism Python Scope Python Modules Python Dates Python Math Python JSON Python RegEx Python PIP Python Try. The Z score is a measure of how many standard deviations a data point is away from the mean. normal distribution would suggest is possible.