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It is easy to calculate: add up all the s, then divide by how many s there are.

The exponent says how many times to use the in a multiplication. In its simplest form, a logarithm answers the question: How many of one do we multiply to gun another ?

In other words it is the sum divided by the count. Now have a look at The Mean Machine.

How to Find the Mean The mean is the average of the s. In that example somee "base" is 2 and the "exponent" is 3: So the logarithm answers the question: What exponent do we need for one to become another ?

Adding a negative is the same as subtracting the without the negative. Example: How many 2s do we multiply to get 8?

The general case is:. It is because 6, 11 and 7 added together is the same as 3 lots of 8: It is like you are "flattening out" the s Example 2: Look at these s: 3, 7, 5, 13, 20, 23, 39, 23, 40, 23, 14, 12, 56, 23, 29 The sum of these s is There are fifteen s. Example 1: What is the Mean of these s?

Advanced Topic: the mean we have just looked at is also called the Arithmetic Mean, because there are other means fub as the Geometric Mean and Harmonic Mean.