Statistics and Probability Dictionary
Select a term from the dropdown text box. The online statistics
glossary will display a definition, plus links to other
related web pages.
E notation is a way to write numbers that are too large or too
small to be concisely written in a decimal format.
With E notation, the letter E represents "times ten raised to the power of".
Here are some examples of numbers written using E notation:
3.02E12 = 3.02 * 1012 = 3,020,000,000,000
9.236E-19 = 9.236 * 10-19 = 0.0000000000000000009236
All of the calculators on the Stat Trek web site use E notation
when numbers are extremely
small. For example, the probability that thirty consecutive coin flips will all
land on Heads is 0.000000000000000888178419700125, which is extremely small. The
Binomial Calculator uses E notation
to express this probability as 8.88178419700125E-16.