The cardinality
Step 1: Read the data set description (from website and dataset itself), carry out data abstraction on the provided data set. (10 points total)
· in a Word document, write down the dataset type. (1 point)
· Write down the number of fields/attributes. (1 point)
· Analyze each field in terms of attribute abstractions: write down a concise description in domain-dependent language of the field’s meaning; decide the attribute type and write that down. (8 points)
Step 2: Analyze the cardinality (10 points total)
Write down the number of total items (1 point), and
· For each attribute, indicate its cardinality. (4 points)
· For categorical attributes, write down the number of unique levels. (2 points)
· For quantitative attributes, specify the range from min to max and note any other characterization that seems potentially useful (cyclic? Anything else?)