Add punctuation: Finally the article can be used to introduce modelling a fundamental concept in science and how it is based on data or conversely how data are fitted into the model
A: Finally, the article can be used to introduce modelling, a fundamental concept in science, and how it is based on data, or conversely how data are fitted into the model.

Add punctuation: Royal Copenhagen Blue Fluted Full Lace Dessert Plate large
A: Royal Copenhagen Blue Fluted Full Lace, Dessert Plate, large

Add punctuation: Price based on booking for 7 nights and 5 people including a 10 discount
A:
Price based on booking for 7 nights and 5 people, including a 10% discount .