Significance

• What is significance?

  The relationship between two variables is strong enough to reject the null hypothesis - our results are unlikely to be due to chance
• If the P value is more than 0.05, what does this mean?

  We accept the null
• If the P value is less than 0.05, what does this mean?

  We reject the null
• What are the three types of data?

  Nominal

  Ordinal

  Interval
• What is nominal data?

  Categories - not qualitative (eg hair colour)
• What is ordinal data?


  Data is ordered but there is no quantifiable difference between values (eg a scale)
• What is interval level data?


  Labels variables with a natural order and a quantifiable difference (eg cm)