PROTEUS

              

 

 

 

 

 

 

 

 

ANALSIS OF VARIANCE-  ANOVA - [INTRODUCTION]

Example: Three rehabilitation methods are being compared.  The goal is to reduce time off work due to (similar) injuries.  Physiotherapy vs chiropractic vs non-steroidal drugs:

Cannot use t-tests three times (danger of 3 x repeating the error of claiming stat sig when not valid)

At this stage, don't worry too much about the correct alternative hypothesis. 

Just describe the result in terms of the original data.  (See conclusion above)