the eighth axis: Index numbers
Section outline
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By the end of this axis the student will be able to
o Define index numbers and their purpose.
o Explain how index numbers track changes over time or across regions.
o Calculate simple and weighted index numbers for given data.
o Compare different types of index numbers and their interpretations.
o Assess the reliability and usefulness of an index number in a real-world context.:
o Construct an index number to illustrate changes in a selected variable or sector.