Table 1.

Methodology of Supermarket Redlining Index (SuRI)

Creating Supermarket Redlining Index	Example using the ‘Sales Volume’ variable
Step 1: Sum of each variable for all stores	Sum of sales volume ($)
Step 2: Computing the variable ratio for each store	Sales Ratio = sale volume of a store /sum of sales volume for all stores
Step 3: Calculating the Variable Indicator for each store	Sales indicator= Sales ratio/ maximum value of sales ratio
Step 4: Calculating a composite index of SuRI for each store including all the variable indicators	SuRI=[sales indicator + service area indicator + …‥+ population density indicator]

Note: The left column lists the steps and the right column provides an example for each step.