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: A single line is drawn on a '''scatter graph''' called a [[Line of Best Fit|line of best fit]].
: The [[Line of Best Fit|line of best fit]] may be a straight line or a curved line that shows a trend in the data.
===Examples===
{| class="wikitable"
|-
|[[File:ScatterGraphStraight.png|center|300px]]
| style="height:20px; width:300px; text-align:center;" |This '''scatter graph''' shows a [[Positive Correlation|positive correlation]] with a straight [[Line of Best Fit|line of best fit]] which goes through zero, showing the relationship is [[Directly Proportional|directly proportional]].
|}
==Key Stage 4==
: A single line is drawn on a '''scatter graph''' called a [[Line of Best Fit|line of best fit]].
: The [[Line of Best Fit|line of best fit]] may be a straight line or a curved line that shows a trend in the data.
===Examples===
{| class="wikitable"
|-
|[[File:ScatterGraphStraight.png|center|300px]]
|[[File:ScatterGraphCurve.png|center|300px]]
|-
| style="height:20px; width:300px; text-align:center;" |This '''scatter graph''' shows a [[Positive Correlation|positive correlation]] with a straight [[Line of Best Fit|line of best fit]] which goes through zero, showing the relationship is [[Directly Proportional|directly proportional]].
| style="height:20px; width:300px; text-align:center;" |This '''scatter graph''' shows a [[Negative Correlation|negative correlation]] with curved [[Line of Best Fit|line of best fit]] showing the relationship is [[Inversely Proportional|inversely proportional]].
|}
===References===
====AQA====
:[https://www.amazon.co.uk/gp/product/0198359381/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=0198359381&linkCode=as2&tag=nrjc-21&linkId=47c8d1ae58d8b3a5e2094cd447154558 ''Scatter graphs, page 268, GCSE Chemistry; Third Edition, Oxford University Press, AQA '']
:[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 ''Scatter graphs, pages 263, 281, GCSE Physics; Third Edition, Oxford University Press, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Scatter graphs, pages 56, GCSE Combined Science Trilogy 2, Hodder, AQA '']
:[https://www.amazon.co.uk/gp/product/1471851362/ref=as_li_tl?ie=UTF8&camp=1634&creative=6738&creativeASIN=1471851362&linkCode=as2&tag=nrjc-21&linkId=7d78d70a2044ee9982dae010c94af92a ''Scatter graphs; Correlation, pages 115-16, GCSE Combined Science Trilogy 2, Hodder, 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 ''Scatter graphs, page 288, Gateway GCSE Biology, Oxford, OCR '']