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Question #1:

1)  Extra case (division) - this is detected by looking at the totals (descriptive statistics), the numbers don't make sense because
of a different aggregation level.

2)  Unlikely and Missing values in the following variables: Area, Population density and HH size.

3)  Problems with ACPRVF and ACPRVM- within range on one variable, but unlikely compared with the other.

4)  Column shift - look at variables after ACPRM in last case (?)

5)  VACM variables - a combination of problems which is first detected by summing VACMs into a new variable (VACTOT)
which should equal 100%. Then look at individual VACMs to see problems (e.g. VACM0)