Think about the following questions and say your answers out loud.
Here is an example of Mr. Bee’s data:
Think about this table.
Important idea to remember:
When we repeat the same test, the results may not be exactly the same every time. Small differences are normal. This is called variation.
What matters is whether the results are close together and show the same general pattern.
If the results are similar, we can feel more confident that the test shows a reliable result.
