left_join(orders, orderdetails, by = c('orderNumber'= 'orderNumber'), group_by(orderDate = Monday), average('priceEach')) #What is the average total for

Related Book For  answer-question

Operations management processes and supply chain

ISBN: 978-0136065760

9th edition

Authors: Lee J Krajewski, Larry P Ritzman, Manoj K Malhotra

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