Connect to the "Significant Volcano Eruption" data source. What is the interquartile range of the distribution of Total Injuries data of the 21st century (show null values at default location)?
Create a left outer join, so that we can calculate the percentage of the returned orders
Create a calculated field ''% of returned orders'':
Drop the Order Date to the filters shelf and select the year 2013
Drop the Region to the rows and % of returned orders to the Text:
Melvin
4 hours ago