| Today we completed our mid-term test with a question on sets. The question and solution is uploaded below. In Section 5.1 Types of data we distinguished between the two types of Categorical data - Nominal and Ordinal. We also discussed 'good' questionnaires, 'bias' and the distinction between Primary and Secondary Sources of Data. | 
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HW: 5.4 Q.1 (as below)
Test Question on Sets
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