Reducing friction: analysis
I can analyse data from an investigation to test the effectiveness of different lubricants.
Reducing friction: analysis
I can analyse data from an investigation to test the effectiveness of different lubricants.
Lesson details
Key learning points
- Categoric variables come in distinct types. Continous variables can take any value on a numerical scale.
- Bar charts are used when the variable you changed in an experiment is categoric.
- An effective lubricant reduces the friction force.
- A conclusion states what you found out in an experiment and also explains how you know.
Common misconception
The type of graph chosen to represent data can just be personal choice.
Specific kinds of graph should be chosen to represent specific kinds of data.
Keywords
Lubricant - A lubricant is a substance added between two surfaces to reduce friction.
Friction - Friction is the force of one surface gripping or rubbing on another.
Categoric - A variable is categoric if it comes in distinct, separate categories.
Continuous - A variable is continuous if it can take any value, including decimals, on a scale of numbers.
Conclusion - A conclusion states what you found out in an experiment and explains how you know.
Licence
This content is © Oak National Academy Limited (2024), licensed on Open Government Licence version 3.0 except where otherwise stated. See Oak's terms & conditions (Collection 2).
Video
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