Difference between revisions of "Mean Average"
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:[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Mean (average), page 6, GCSE Biology; The Revision Guide, CGP, AQA ''] | :[https://www.amazon.co.uk/gp/product/1782945563/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945563&linkCode=as2&tag=nrjc-21&linkId=9a1d023a374038e6072f33c4f3cf808b ''Mean (average), page 6, GCSE Biology; The Revision Guide, CGP, AQA ''] | ||
:[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10061 ''Mean (average), page 6, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | :[https://www.amazon.co.uk/gp/product/1782945598/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945598&linkCode=as2&tag=nrjc-21&linkId=ad276ad49df77ab4b40ab4fd0fe10061 ''Mean (average), page 6, GCSE Combined Science; The Revision Guide, CGP, AQA ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782948120/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782948120&linkCode=as2&tag=nrjc-21&linkId=dedef775c6a43dbb0a609441525adac0 ''Mean (average), page 14, GCSE Biology, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782945741/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782945741&linkCode=as2&tag=nrjc-21&linkId=30da4f2178da182547b62a7329d13b57 ''Mean (average), page 6, GCSE Combined Science; The Revision Guide, CGP, Edexcel ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/1782946748/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1782946748&linkCode=as2&tag=nrjc-21&linkId=a4f0348fc37d0ba1bb52d27f8679581f ''Mean (average), page 7, GCSE Biology; The Revision Guide, CGP, Edexcel ''] | ||
Latest revision as of 16:53, 22 November 2019
Contents
Key Stage 3
Meaning
A mean average is when you add up a set of numbers and divide by how many of numbers were added.
About a Mean Average
- A mean average is used in science to reduce the effects of random errors in the results of an experiment.
Calculating a Mean Average
Results: 5,3
\(Average = \tfrac{5+3}{2}\)
\(Average = 4\)
Results: 7.0, 6.8, 7.8
\(Average = \tfrac{7.0+6.8+7.8}{3}\)
\(Average = 7.1\)
Results: 12.3, 11.7, 11.4, 12.1
\(Average = \tfrac{12.3+11.7+11.4+12.1}{4}\)
\(Average = 11.875\) In science the answer should be rounded to the same number of significant figures as the original numbers.
\(Average = 11.9\)
Examples
 |
The average for each set of results can be calculated by adding a row together and dividing by the number of results in that row. |
Key Stage 4
Meaning
A mean average is when you add up a set of numbers and divide by how many of numbers were added.
About a Mean Average
- A mean average is used in science to reduce the effects of random errors in the results of an experiment.
Calculating a Mean Average
Results: 5,3
\(Average = \tfrac{5+3}{2}\)
\(Average = 4\)
Results: 7.0, 6.8, 7.8
\(Average = \tfrac{7.0+6.8+7.8}{3}\)
\(Average = 7.1\)
Results: 12.3, 11.7, 11.4, 12.1
\(Average = \tfrac{12.3+11.7+11.4+12.1}{4}\)
\(Average = 11.875\) In science the answer should be rounded to the same number of significant figures as the original numbers.
\(Average = 11.9\)
Examples
|
The average for each set of results can be calculated by adding a row together and dividing by the number of results in that row. |
References
AQA
- Averages (means), page 14, GCSE Chemistry, CGP, AQA
- Averages (means), page 14, GCSE Combined Science Trilogy; Chemistry, CGP, AQA
- Averages (means), page 7, GCSE Chemistry; The Revision Guide, CGP, AQA
- Averages, page 13, GCSE Combined Science Trilogy; Physics, CGP, AQA
- Averages, page 14, GCSE Physics; The Complete 9-1 Course for AQA, CGP, AQA
- Averages, page 6, GCSE Physics; The Revision Guide, CGP, AQA
- Averages, pages 260, 262, 281, GCSE Physics; Third Edition, Oxford University Press, AQA
- Averages, pages 262-263, GCSE Biology; Third Edition, Oxford University Press, AQA
Edexcel
- Averages (means), page 14, GCSE Chemistry, CGP, Edexcel
- Averages, page 14, GCSE Physics, CGP, Edexcel
- Averages, page 6, GCSE Combined Science; The Revision Guide, CGP, Edexcel
- Averages, page 7, GCSE Biology; The Revision Guide, CGP, Edexcel
- Averages, page 7, GCSE Chemistry; The Revision Guide, CGP, Edexcel
- Averages, page 7, GCSE Physics; The Revision Guide, CGP, Edexcel
- Mean (average), page 6, GCSE Biology; The Revision Guide, CGP, AQA
- Mean (average), page 6, GCSE Biology; The Revision Guide, CGP, AQA
- Mean (average), page 6, GCSE Combined Science; The Revision Guide, CGP, AQA
- Mean (average), page 14, GCSE Biology, CGP, Edexcel
- Mean (average), page 6, GCSE Combined Science; The Revision Guide, CGP, Edexcel
- Mean (average), page 7, GCSE Biology; The Revision Guide, CGP, Edexcel