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.
Two 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 6. You can also
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Level 1
Level 2
Level 3
Level 4
Level 5
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 5 April 'Starter of the Day' page by Mr Stoner, St George's College of Technology: "This resource has made a great deal of difference to the standard of starters for all of our lessons. Thank you for being so creative and imaginative." Comment recorded on the 23 September 'Starter of the Day' page by Judy, Chatsmore CHS: "This triangle starter is excellent. I have used it with all of my ks3 and ks4 classes and they are all totally focused when counting the triangles." 
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Numeracy"Numeracy is a proficiency which is developed mainly in Mathematics but also in other subjects. It is more than an ability to do basic arithmetic. It involves developing confidence and competence with numbers and measures. It requires understanding of the number system, a repertoire of mathematical techniques, and an inclination and ability to solve quantitative or spatial problems in a range of contexts. Numeracy also demands understanding of the ways in which data are gathered by counting and measuring, and presented in graphs, diagrams, charts and tables." Secondary National Strategy, Mathematics at key stage 3 

Go MathsLearning and understanding Mathematics, at every level, requires learner engagement. Mathematics is not a spectator sport. Sometimes traditional teaching fails to actively involve students. One way to address the problem is through the use of interactive activities and this web site provides many of those. The Go Maths main page links to more activities designed for students in upper Secondary/High school.  
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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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