Chapter 15 - Index numbers. When you have completed this chapter, you will be able to: Describe the term index, understand the difference between a weighted and an unweighted index, construct and interpret a laspeyres price index, construct and interpret a paasche price index, construct and interpret a value index, explain how the consumer price Index is constructed and interpreted. | Lecture Statistical techniques in business and economics (14/e): Chapter 15 - Lind, Marchal, Wathen