Tracking Changes Through Time

Happy (belated) new year, library world! This time of year I often have to hesitate a moment before writing the date and find myself asking questions such as, “What year is it again?” or “How did the holidays go by so fast?” Even when it feels like it’s flying by to us humans, in the data world time is still a reliable tool for revealing patterns and long-term trends, or even relationships between variables, as long as data is collected at consistent intervals. After a year of Public Library Blueprint posts, a standard type of chart that we have yet to tackle in detail is the line chart, so this feels like the right time to introduce it…

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