• You will require to aggregate information per yr. Data aggregation is explained and qualified in Module 5b (and its tutorial). Sooner or later You'll need a dataset with a single aggregated observation per suitable audio element every year. You might like to describe central tendency for a measure these https://exactlybookmarks.com/story12530023/the-single-best-strategy-to-use-for-%E4%BB%A3%E5%86%99report