StatGrid ChallengeArrange the numbers one to nine in a three by three grid to obtain the given means, medians and ranges. 
Drag the numbers into the yellow cells to make the given row and column statistics.
Seven numbers have already been placed on the grid.
Congratulations!
Claim your trophy by clicking on the red button below.
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Your answer is not correct.
The statistics of each row and column should be as given.
Press the Clear button and try again.
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This is StatGrid Challenge level 1. You can also
try:
Level 2
Level 3
Level 4
Level 5
Level 6
Level 7
Level 8


Transum.orgThis web site contains over a thousand free mathematical activities for teachers and pupils. Click here to go to the main page which links to all of the resources available. Please contact me if you have any suggestions or questions. 
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Mathematicians are not the people who find Maths easy; they are the people who enjoy how mystifying, puzzling and hard it is. Are you a mathematician? Comment recorded on the s /Indice 'Starter of the Day' page by Busolla, Australia: "Thank you very much for providing these resources for free for teachers and students. It has been engaging for the students  all trying to reach their highest level and competing with their peers while also learning. Thank you very much!" Comment recorded on the 26 March 'Starter of the Day' page by Julie Reakes, The English College, Dubai: "It's great to have a starter that's timed and focuses the attention of everyone fully. I told them in advance I would do 10 then record their percentages." 
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To find the mean of a set of values add them together then divide by the number of values.
Example: find the mean of 8,9,10: 8+9+10=27, 27÷3=9: The mean is 9
To find the median of a set of values arrange them in order then choose the middle value. If their are two middle values select the answer that is half way between those values.
Example: find the median of 4,12,7,6: In order 4,6,7,12: (6+7)÷2: The median is 6.5
A formula for finding which is the middle value if there are N values is (N+1)/2. You can see why there is an 'add one' here.
The range of a set of values is the smallest value subtracted from the largest.
Example: find the range of 2,4,4,1: 41=3: The range is 3.
More Averages activities.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you donâ€™t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
There is a selfmarking exercise on Averages and Range and here is the video that was made for that exercise:
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