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

index-linked gilts
Read More
Ponzi Scheme
Read More
Venture Capital
Read More
Earnings per share
Read More
Stock Exchange
Read More
Key Information Document (KID)
Read More
Exchange-Traded Fund (ETF)
Read More
Compound interest
Read More
Pick the plan that suits you best
Save 17% when you choose an annual subscription.
Basic
£0.00
/Month
Accounts
  • White check mark
    General Investment Account
Benefits
  • White check mark
    A great way to try Freetrade before transferring your ISA or pension
  • White check mark
    Unlimited commission-free trades. Other charges may apply.
  • White check mark
    Trade USD and EUR stocks at the exchange rate + 0.99% FX fee
  • White check mark
    Access to a selection of Freetrade’s 6,200+ global stocks and ETFs
  • White check mark
    1% AER on up to £1,000 uninvested cash
  • White check mark
    Fractional US shares
  • White check mark
    Access to mobile app and web platform
Standard
£4.99
/Month
£59.88 billed annually
Accounts
  • White check mark
    General Investment Account
  • White check mark
    Stocks and shares ISA
Everything in Basic and:
  • White check mark
    Access to 6,200+ global stocks and ETFs, including gilts
  • White check mark
    A lower FX fee of 0.59% on non-GBP trades
  • White check mark
    3% AER on up to £2,000 uninvested cash
  • White check mark
    Early market access with pre-market trading
  • White check mark
    Automated order types, including recurring orders
  • White check mark
    More stats and analysis, including analyst ratings and EPS estimates 
Plus
£9.99
/Month
£119.88 billed annually
Accounts
  • White check mark
    General Investment Account
  • White check mark
    Stocks and shares ISA
  • White check mark
    Personal pension
Everything in Standard and:
  • White check mark
    A lower FX fee of 0.39% on non-GBP trades
  • White check mark
    New! Access to mutual funds
  • White check mark
    Priority customer service
  • White check mark
    5% AER on up to £3,000 uninvested cash
  • White check mark
    Free, same day withdrawals
Basic
£0.00
/Month
Accounts
  • White check mark
    General Investment Account
Benefits
  • White check mark
    A great way to try Freetrade before transferring your ISA or pension
  • White check mark
    Unlimited commission-free trades. Other charges may apply.
  • White check mark
    Trade USD and EUR stocks at the exchange rate + 0.99% FX fee
  • White check mark
    Access to a selection of Freetrade’s 6,200+ global stocks and ETFs
  • White check mark
    1% AER on up to £1,000 uninvested cash
  • White check mark
    Fractional US shares
  • White check mark
    Access to mobile app and web platform
Standard
£5.99
/Month
billed monthly
Accounts
  • White check mark
    General Investment Account
  • White check mark
    Stocks and shares ISA
Everything in Basic and:
  • White check mark
    Access to 6,200+ global stocks and ETFs, including gilts
  • White check mark
    A lower FX fee of 0.59% on non-GBP trades
  • White check mark
    3% AER on up to £2,000 uninvested cash
  • White check mark
    Early market access with pre-market trading
  • White check mark
    Automated order types, including recurring orders
  • White check mark
    More stats and analysis, including analyst ratings and EPS estimates 
Plus
£11.99
/Month
billed monthly
Accounts
  • White check mark
    General Investment Account
  • White check mark
    Stocks and shares ISA
  • White check mark
    Personal pension
Everything in Standard and:
  • White check mark
    A lower FX fee of 0.39% on non-GBP trades
  • White check mark
    New! Access to mutual funds
  • White check mark
    Priority customer service
  • White check mark
    5% AER on up to £3,000 uninvested cash
  • White check mark
    Free, same day withdrawals

You’re just minutes away from commission-free investing

When you invest, your capital is at risk