Jo has the following 9 coins in her purse: 10p, 2p, 2p, 50p, 10p, 1p, 20p, 2p, 2p. Work out the median, mean, mode and range.

To work out the median of a set of numbers we first place them in order:

1p, 2p, 2p, 2p, 2p, 10p, 10p, 20p, 50p

Then the median is the middle value in the list, in this case 2p.

To work out the mean we must take the total of all the numbers added together:

1p+1p+1p+2p+2p+10p+10p+20p+50p = 99p

and then divide the total by the number of coins (9):

99p / 9 = 11p

so the mean is 11p.

The mode is another way of saying the "most common value" so we are looking for the value that appears most often in the list. In this list it is clearly 2p which appears 4 times.

The range is the difference between the highest and lowest values in the list which are 50p and 1p so the range is:

50p-1p = 49p.

So we have median = 2p, mean = 11p, mode = 2p and range = 49p

Answered by Chris B. Maths tutor

4414 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Write 16× 8^2x as a power of 2 in terms of x.


3x + y = -4; 3x -4y = 6; Solve the simultaneous equations for x and y


How do i solve simultaneous equations?


Simplify (x + 3)(2x + 5) - (x - 1)


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences