Getting good results

Question 1

precise

Answer 1

precise results don’t vary much from the mean. Precision is reduced by random error (unpredictable way in which all measurements vary)

Question 2

Repeatable and reproducible

Answer 2

• repeatable means that if the same person repeats the experiment using the same methods and equipment, they will get the same results
• reproducible means that if someone different does the experiment, using slightly different method or piece of equipment, the results will still be the same

Question 3

Validity

Answer 3

valid results answer the original question. To get valid result you need to control all the variables to make sure only testing the thing you want to

Question 4

Accurate

Answer 4

Accurate results are really close

- human interpretation of a measurement can reduce the accuracy of results