Collecting Data

Question 1

Name 4 ways you can improve reliability?

Answer 1

1. Repeating at least 3 times and calculating the mean
2. Cross checking results by taking a second set of readings with another instrument (or a different observer)
3. By checking your results match with secondary sources

Question 2

Define ‘accuracy’

Answer 2

Being really close to the true answer

Question 3

Define ‘precision’

Answer 3

Where data is all really close to the mean