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Science at ISHR

How Science Works. Science at ISHR. Precision How small a measurement is. Millimetres are more precise than centimetres because they are smaller. How Science Works. Science at ISHR. Accuracy How close a measurement is to its true value. Science at ISHR. Science at ISHR.

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Science at ISHR

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  1. How Science Works Science at ISHR Precision How small a measurement is. Millimetres are more precise than centimetres because they are smaller.

  2. How Science Works Science at ISHR Accuracy How close a measurement is to its true value. Science at ISHR Science at ISHR

  3. How Science Works Science at ISHR Random errors Errors caused by factors we can’t control, like tiny temperature changes in a room. They can also happen if you make a mistake – like pushing the stopwatch button too early.

  4. How Science Works Science at ISHR Systematic errors Errors caused by inaccurate equipment, equipment that doesn’t zero properly or by problems with a method.

  5. How Science Works Science at ISHR Reliability (‘reproducibility’) If someone else / an independent research group can repeat your measurements and get the same results then your results are ‘reliable’ because they are ‘reproducible’..

  6. How Science Works Science at ISHR Reliability (‘repeatability’) If you can repeat your measurements and get the same results then your results are reliable because they are repeatable. This will be evident because all of your data will be close to the mean.

  7. How Science Works Science at ISHR Independent variable The variable you change to see what happens, or how it affects what you are measuring.

  8. How Science Works Science at ISHR Dependent variable The variable that you measure.

  9. How Science Works Science at ISHR A fair test An investigation or experiment where only the independent variable has been allowed to affect the dependent variable. This means only changing one variable and keeping the control variables unchanged.

  10. How Science Works Science at ISHR Validity Your results must be valid if you are going to be able to draw a conclusion from them. To get valid results you need to carry out a fair test.

  11. How Science Works Science at ISHR Valid data (measurement(s)) is evidence that is reliable and which is relevant to the question being investigated

  12. How Science Works Science at ISHR Continuous variables Variables that can have any numerical value. You should use a line graph to show this type of data.

  13. How Science Works Science at ISHR Categoric variables Variables that are described by labels. You should use a bar chart to show this type of data.

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