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Week 7 dq2 explanation:
The problem here is to find whether the cateogy of post has any relationship with pension benefits. The claim here is to check whether supervisor, Clerical, Labor has the same pensions after retirement.
For this data for different categories such as supervisor, Clerical, Labor were selected and recorded. Thus cadrewise four groups were made according to posts. Plans were grouped into three different types. Thus 3x3 table is given.
For this here we are going to test chi square test of independence. The significance level was 5% and the hypotheses were:
H_0: There is no dependence between the two attributes
H_a: There is...