maths/stats

• P-values:

  • Probability that chance caused any difference or associations - in biology p=0.05 is used 

   
• T test - differences in mean values 

  Spearman's rank - significant correlations/association between 2 variables 

  Chi squared - differences in observed and expected values 
• smaller the P value, more significant the difference/association
• if difference is not significant, difference/correlation is likely due to chance