This tutorial shows how to calculate areas/probabilities using the cumulative standard normal tables. 0 to Z tables: • Normal Distribution | Mean or 0 to Z Table... Inverse lookup: • Normal Distribution: Finding z and x -Inv... On Casio Calculator: • Casio fx-ES Plus: Z-Score Probabilities & ... 68-95-99.7 Rule: • The Empirical Rule Explained: 68-95-99.7 R... Steps for calculating areas/probabilities using the cumulative normal distribution table: 1. Translate the score (x) into a z-score: 2. Find the corresponding area from the z-table. 3. i) For less than area/probability, the area in the table is the answer. ii) For greater than area, subtract area in the table from 1. iii) For area between, subtract smaller area from larger area.