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1. Mean - ALLOWS ME TO SUM UP EACH SET OF DATA WITH A SINGLE VALUE, THIS HELPED ME TO COMPARE THE DATA SETS

Interquartile Range - THIS SHOWS HOW SPREAD OUT MY DATA WAS IN EACH SET AND TO SEE IF THERE WAS MUCH VARIATION IN THE BOOK PRICES

2. THE POPULATION IN MY INVESTIGATION WAS ALL OF THE BESTSELLERS TOP 80 FICTION HARDBACK AND PAPERBACK FICTION BOOKS ON THE WHSMITH WEBSITE

I DID…

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