The simple definition of a mean is that of a numeric quantity which represents the center of a collection of numbers. Here the trick lies in defining the exact type of numeric collection, as beyond… ...

There are examples on graphs and squared paper work, and the users of the book will have an abundant choice of exercises of modern type. Examples in Arithmetic.

Learn how to find the 𝒏th term of an arithmetic sequence with this BBC Bitesize Maths article. For students between the ages of 11 and 14.