Objective of the session
     To understand two-
     way anova through 
     software packages
     1. What is the procedure to 
     perform Two-way ANOVA?
     2. How do we interpret 
     results?
    Two-way ANOVA using SPSS
    
      The  two-way  ANOVA  compares  the  mean 
      differences  between  groups  that  have  been 
      split  on  two  independent  variables  (called 
      factors).    You    need     two     independent, 
      categorical  variables  and  one  continuous, 
      dependent variable .
  Objective
   
    We are interested in whether an monthly per 
    capita  food  expenditure  was  influenced  by 
    their  level  of  education  and  their    gender 
    head.   Monthly per capita food expenditure 
    with higher value meaning a better off. The 
    researcher  then  divided  the  participants  by 
    gender  head of HHs i.e Male head & Female 
    head  HHs  and  then  again  by  level  of 
    education.
    
     In  SPSS  we  separated  the  HHs  into  their 
     appropriate  groups  by  using  two  columns 
     representing  the  two  independent  variables 
     and    labelled   them    “Head_Sex"     and 
     “Head_Edu". For “head_sex", we coded males 
     as   "1"  and  females  as  “0",  and  for 
     “Head_Edu", we coded illiterate  as  "1",  can 
     sign only as "2" and can read only as "3“ and 
     can read & write as “4”. Monthly per capita 
     food  expenditure  was  entered  under  the 
     variable name, “pcmfx".