notes/analysis/price_mix_vol.md
Paul Trowbridge 2a6f1c5dcf redis
2020-01-12 21:28:28 -05:00

370 B

Only applies to items that exist in both sets of data

Change in Price

( P₂ - P₁ ) Q₂

Change in Quantity

( Q₂ - Q₁ ) P₁

To further break out change in quantity

Change in Quantity - Volume Related

Q₂ ( Q₁ / Σ ( Q₁ ) ) - Q₁

Change in Quantity - Mix Related

Q₂ - Q₂ ( Q₁ / Σ ( Q₁ ) )