Biology Skills

• Validity

  Extent to which experiment and data addresses the question intended

  Improve Validity: Control more variables e.g bandicoots habitat

  “Is it a fair test?”
• Reliability

  The extent to which the findings of repeated experiments conducted under identical or similar conditions, agree with each other. 

  Improve Reliability: Reduce random error

  “Is the data consistent?”
• Accuracy

  The extent to which a measured value agrees with its true value

  Improve Accuracy: Reduce systematic error e.g. equipment choice