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