Save guides, add subjects and pick up where you left off with your BBC account. An example of a linear sequence. A list of numbers or diagrams that are in a particular order is called a sequence ...

and use the standard deviation function: You'll get more accurate results using more than one month's trading data, such as three or more years. The example below uses the index's daily values ...

A new species of cable bacteria, which function like electrical wiring, was recently discovered in the US. Its unique ...