Difference between revisions of "Discrete Variable"
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==Key Stage 4== | ==Key Stage 4== | ||
===Meaning=== | ===Meaning=== | ||
| − | A '''discrete variable''' is a numerical variable which can only be specific values with no numbers in between. | + | A '''discrete variable''' is a numerical [[variable]] which can only be specific values with no numbers in between. |
===About Discrete Variables=== | ===About Discrete Variables=== | ||
| − | : '''Discrete variables''' are often | + | : '''Discrete variables''' are often integers, but not always. |
===Examples=== | ===Examples=== | ||
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: The [[Boiling Point|boiling point]] of an [[alkane]] depending on the number of [[Carbon]] [[atom]]s in that [[alkane]]: The number of [[Carbon]] [[atom]]s is a '''discrete variable''' because you can't have half an [[atom]]. | : The [[Boiling Point|boiling point]] of an [[alkane]] depending on the number of [[Carbon]] [[atom]]s in that [[alkane]]: The number of [[Carbon]] [[atom]]s is a '''discrete variable''' because you can't have half an [[atom]]. | ||
: How the shoe size depends on the size of people's feet: The shoe size is a '''discrete variable''' because there are no sizes between 7 and 7.5. | : How the shoe size depends on the size of people's feet: The shoe size is a '''discrete variable''' because there are no sizes between 7 and 7.5. | ||
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| + | ===References=== | ||
| + | ====AQA==== | ||
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| + | :[https://www.amazon.co.uk/gp/product/019835939X/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=019835939X&linkCode=as2&tag=nrjc-21&linkId=57e96876985fc39b1a3d8a3e3dc238b6 ''Discrete variables, page 260, GCSE Physics; Third Edition, Oxford University Press, AQA ''] | ||
| + | |||
| + | ====OCR==== | ||
| + | :[https://www.amazon.co.uk/gp/product/0198359810/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359810&linkCode=as2&tag=nrjc-21&linkId=d768d99f1a06f7c12fab40e5aef85a55 ''Discrete variables, pages 8, 282, Gateway GCSE Biology, Oxford, OCR ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/0198359837/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359837&linkCode=as2&tag=nrjc-21&linkId=3c4229e8b023b2b60768e7ea2307cc6f ''Discrete variables, pages 8, 282, Gateway GCSE Physics, Oxford, OCR ''] | ||
| + | :[https://www.amazon.co.uk/gp/product/0198359829/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359829&linkCode=as2&tag=nrjc-21&linkId=90e8d7b4f039d53035238fa0320fe00b ''Discrete variables, pages 8, 297, Gateway GCSE Chemistry, Oxford, OCR ''] | ||
Latest revision as of 16:20, 4 December 2019
Contents
Key Stage 4
Meaning
A discrete variable is a numerical variable which can only be specific values with no numbers in between.
About Discrete Variables
- Discrete variables are often integers, but not always.
Examples
- The number of people with a particular eye colour: The number of people is a discrete variable because you can't have half a person.
- The boiling point of an alkane depending on the number of Carbon atoms in that alkane: The number of Carbon atoms is a discrete variable because you can't have half an atom.
- How the shoe size depends on the size of people's feet: The shoe size is a discrete variable because there are no sizes between 7 and 7.5.