ISA keywords 1
Sing along to the tune of 'Deck the Halls' as you learn the second batch of AQA ISA keywords…'Calibration' involves fixing known points and then marking on in between them numbers, to make up a scale – agreed upon by all scientists, by all scientists, so that... everyone...gives the same value for a measurement, and everyone agrees upon its name!
Categoric variables have their values best described simply by words that are labels, not by numbers – you decide how to display categoric data in a way that's fine. You must give results in chart form – bar or pie chart, never line!
Variables that are numbers can be of two types, you know. If it can be any value then it's continuous, so you can plot it on a line graph, but if ... it can ... only be whole numbers then it's 'discrete categoric'- Believe me! |
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