October 2018
Beginner to intermediate
676 pages
18h 30m
English
This dataset (provided in the code library) contains information on the sales of various items for a given date, day of the week, whether it is a weekend, and whether there was promotion on that day. We have data for three years: 2015, 2016, and 2017. The first five rows of the dataset look as follows:

Then, we will add two derived variables that help plot the required graphs:Month (1 to 12) and Quarter (1 to 4). After adding these variables, the first five rows look as follows:

The following code block reads the Excel ...
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