In GCSE "How science works questions" how can you increase reliabilty and accuracy?

Question

How do you increase accuracy and reliability in an experiment? Bearing in mind accuracy and reliability are different from each other.

Answer 1

Accuracy:

-Use precise, fair eqiupment

-Make sure to keep all the of the non-variable factors as constant as possible by whatever means

Reliability:

-Repeating the experiment many times to get a more reliable average

-Again, ensuring that there are no other, unwanted factors having an effect on your result

hmm. That's all I could think of for now, but I'll get back to you if something springs to mind.

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Why/ how do you know that precise equipment doesn't ensure accuracy?

Answer 2

reliabilty - get more data - be more accurate - keep things the same temperaure etc

Accuracy - Use better equipment, measure to more decimal places- ie weight 24.28g rather that 24g