Arithmetic Mean

The sum of a set of numbers added together and then divided by the total amount of numbers in that set.

‘Arithmetic mean’ is a fancy way of saying ‘mean’ or ‘average.’

To find the arithmetic mean, you add together a set of numbers and then divide your answer by the amount of numbers you had in that original set.

This may sound wordy - especially for math-o-phobes - but it’s really simple.

Take 1,2,3,4,5 as a set of numbers.

1+2+3+4+5 =15

In our original set, there were 5 numbers. So to get the average we just do….

15 ÷ 5 = 3

Simples.

More terms

Clean price

The quoted price of a gilt, which excludes accrued interest
Read more

Net Income (NI)

The money a firm is left with from sales after subtracting taxes and different business costs.
Read more

Conventional gilts

Gilts where the dividends and principal repayments are fixed in nominal terms. This is as opposed to an index-linked gilt where the dividends and principal repayments are related to movements in the Retail Prices Index (RPI).
Read more

Time Value of Money

The concept that money you have now is more valuable than the same sum in the future.
Read more

Beta

Learn what Beta stands for in finance.
Read more

Hedge Fund

Investment funds that are often associated with riskier and shorter-term trading strategies.
Read more

Value Investing

The art of buying shares which trade below their value, according to the analysis of the value investor.
Read more

Exchange-Traded Fund (ETF)

A collection of investments, pooled into a single fund that can be bought and sold on a stock exchange.
Read more

Holding Period Return

The amount of money generated by an asset during the time that it was held by an investor..
Read more

You’re just minutes away from commission-free investing

When you invest, your capital is at risk