Retail panel
In this method data is collected from the checkout scanner tapes of a sample of supermarkets and other retailers that use electronic scanning systems. For this to happen the product should carry the Universal Product Code (UPC) often referred to as bar code.
The advantages of this method are
- Greater frequency
- Elimination of breakage and pilferage being counted as sales
- More accurate price information
The disadvantages are
- Only big supermarkets have scanners
- The quality of scanner data is dependent on checkout clerk. For e.g. if a person is buying 5 packets of packaged milk. In that case the clerk may put only 1 in the scanner and then multiply it by 5. So the rest 4 wont come in the scanner’s data.
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