Normal Distribution: Calculating Probabilities/Areas (z-table)
Joshua Emmanuel
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Normal Distribution: Calculating Probabilities/Areas (z-table)
2 946 746 просмотров · 10 лет назад
Joshua Emmanuel
173 тыс. подписчиков
2 946 746 просмотров · 10 лет назад
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.