Module 04 · Price Positioning · 04D

Explain Any Index

Can every number be rebuilt line by line?

Try this

1Click the SPI 95.2 value
2Walk the audit waterfall down to the capture run
Expected: Waterfall: displayed index → category → item pair → normalisation → approved match → source run.

4/4

Select a number

Audit waterfall · each step verifiable

Verification

own_norm   = 89 / 236 × 100 = 37.7119
rival_norm = 99 / 250 × 100 = 39.6000
SPI        = 100 × 37.7119 / 39.6000 = 95.23
check: 95.2 ✓

Both raw prices

Midnight Peony Fine Fragrance Mist 236ml

معطر الجسم فاوانيا منتصف الليل 236 مل

ticket 89 AED · effective 89

Velvet Orchard Peony Blush Body Mist 250ml

معطر الجسم فاوانيا بلش 250 مل

ticket 99 AED · effective 79