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Question: What score do the main supermarkets in Spain obtain according to their environmental performance disclosed in their reports?
Answer:
5.4
Research Group Eticonsum
Environmental Performance
Lidl Stiftung & Co. KG
2020
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Answers are calculated as a weighted average. To find a weighted average of a group of numbers that have been normalized to the same 0-10 scale, you simply multiply each number by its weight (percentage) and add them up

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