significance levels

• if the p value is less than or equal to 0.05

  • the results are significant
  • the null hypothesis is rejected
• if a p value is smaller than 0.05

  • the results are not significant
  • the null hypothesis is accepted
• stringent levels (highly signifificant)

  • p value is less than or equal 0.01
  • this means we are 99% confident that our results are significant
• non stringent levels

  • p value is less than or equal 0.1
  • we are 90% sure the results are significant