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Understanding Indexes

Indexes give you an idea of how over or under-represented each Mosaic Group is compared to national averages.

For example:

  • an index of 100 indicates the proportion of customers in a group matches the national average
  • an index of 110 indicates the proportion of customers in a group is 10% higher than the national average
  • an index of 200 indicates the proportion of customers in a group is 100% higher or twice the national average
  • an index of 350 indicates the proportion of customers in a group is 250% or 3.5 times higher than the national average

Let's say 10% of your customers belong to Mosaic Group A - Lavish Lifestyles. Let's also assume that 5% of the population nationally belong to Mosaic Group A - Lavish Lifestyles.

Then Mosaic Group A - Lavish Lifestyles will have an index of 200. Your customers are twice as likely to belong to A - Lavish Lifestyles than a random member of the public would be.