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193 bytes added ,  12:24, 23 December 2020
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Note that of the 6118 products in the olive oils category only 1967 seem to have ingredients defined. I do not know how to list the products with more than one ingredient. So we have no other choice than find to go through all products, if we want to find these products.
 
Note that of the 6118 products in the olive oils category only 1967 seem to have ingredients defined. I do not know how to list the products with more than one ingredient. So we have no other choice than find to go through all products, if we want to find these products.
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== Data quality ==
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Another way to find interlopers might be by looking at the nutritional values. If a nutritional value is to abnormal, then it might be another type of product. But then we have to find out what is normal first.
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=== Nutritional values check===
 
=== Nutritional values check===
 
A next step to correct wrong nutritional data, I started by looking at the [https://world.openfoodfacts.org/cgi/search.pl?action=process&tagtype_0=categories&tag_contains_0=contains&tag_0=olive%20oils&sort_by=unique_scans_n&page_size=20&axis_x=fat&graph_title=Olive%20oils%20(fat%20percentage)&graph=1 fat percentage].
 
A next step to correct wrong nutritional data, I started by looking at the [https://world.openfoodfacts.org/cgi/search.pl?action=process&tagtype_0=categories&tag_contains_0=contains&tag_0=olive%20oils&sort_by=unique_scans_n&page_size=20&axis_x=fat&graph_title=Olive%20oils%20(fat%20percentage)&graph=1 fat percentage].
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