Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg...
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Transcript of Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg...
![Page 1: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/1.jpg)
Scanner Data – Discussion on the Treatment of
Discounts in the CPI
Muhanad Sammar, Anders Norberg & Can Tongur
Statistics Sweden
![Page 2: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/2.jpg)
Disposition
• Scanner Data in the Swedish CPI• The Swedish Practice• A New System• Data file• Different Rebates and Discounts• Regulations & Guidelines• Future plans
![Page 3: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/3.jpg)
The Price Unit’s Current Position
• Scanner data in the CPI• One major retail chain (Approx 50%) - Daily necessities• Pharmacies (Total data)• The government owned chain of alcohol stores
(Total data)
• Studying scanner data from• Two more retail chains (Approx 35%)• A major railway operator
• Secure scanner data from• Petrol stations• Hardware stores• Electrical retailers
![Page 4: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/4.jpg)
The Swedish Practice 1- Manual price collection (observed prices)
Store A1 Store A2 Store An
Price collector B1
Item 3
Item 2
Item iItem 4
Item 1
Price collector B2 Price collector Bm
![Page 5: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/5.jpg)
The Swedish Practice 2- Transaction prices (weekly deliveries)
Store A1 Store A2 Store An
Item 3
Item 2
Item iItem 4
Item 1
Population C1
Population C2 Population Cn
![Page 6: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/6.jpg)
A complete system has been built
• File validation• File structure• Translate variables' name• Ensure the quality
• Selecting – fixed basket• Price validation
• Limits• Market analysis• Aggregation
• Unweighted geometric mean• Weighted arithmetic mean
![Page 7: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/7.jpg)
Why the Price Unit went to Use Scanner Data in the CPI?• Better quality• Less volatile data (three weeks)• “A study on Scanner Data in the Swedish CPI”• A report by Swedish Consumer Agency
• For 9% of the items in the survey, the prices were hard to find or could not be found at all.
• For 6% of the examined products, the prices on the shelves and packages were different from the purchased prices.
• Human errors
![Page 8: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/8.jpg)
Scanner Data- Variables
• Excel sheet• Transaction prices (=Turnover/Units Sold)• EAN codes (bar codes)• Detailed information
• Product description
• Week/Year
• Store
• Quantity
• Brand
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Different Rebates and Discounts
• Member card discounts
• Bonus offers (extras) like “3 for 2”
• Sale
• Coupon discounts
![Page 10: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/10.jpg)
Member Card Discounts
• “Membership” offers are for the moment a steadily growing marketing strategy
• premium checks
• membership discounts
• offers on travel, hotels and various entertainments.
• For one of the retail chains, 80% of all their sales, registered in 2011, were made by members.
• The two major chains have millions of households tied to them through membership cards which are used actively
![Page 11: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/11.jpg)
Bonus Offers (extras) - like “3 for 2”
• Example 1: Same product - $30 off
• Example 2: Different products - $30 off (split proportionally)
$ $ $
![Page 12: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/12.jpg)
Coupon discounts
• Issued by the seller or the supplier (in paper)
• Accepted as any payment
• Issued by the seller or the supplier (Membership card)
![Page 13: Scanner Data – Discussion on the Treatment of Discounts in the CPI Muhanad Sammar, Anders Norberg & Can Tongur Statistics Sweden.](https://reader035.fdocuments.net/reader035/viewer/2022062715/56649d9c5503460f94a84acc/html5/thumbnails/13.jpg)
Regulations & Guidelines
• The review of the Swedish Consumer Price Index (SOU 1999:124)
• HICP regulations
• Consumer price index manual: Theory and practice (The International CPI Manual)
• National Accounts manual
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Price Unit's aspiration
• Secure more scanner data
• Introduce more scanner data into the CPI
• Introduce 5 digit level COICOP (year 2014)
• Enhance international cooperation
• Exchange knowledge and expertise on scanner data and on quality management
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Summing-up
• New method of collecting prices• Update guidelines
• Update regulations
• A promising source of data• High quality of actual transactions
An issue of principle:
Should rebates and discounts in the Scanner Data be included or excluded in the target price
for the CPI?