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Count unique id's and find duplicate rows

Great job replacing NULL values! Next, count unique Ids to check user submissions in each dataset. Then, eliminate duplicate rows. Keep up the momentum!

We do not recommend doing so, but if you lost progress you can load the solution workflow of the previous exercise 1_2_finding_and_replacing_null_values.yxmd from the Exercises folder.

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Case Study: Analyzing Fitness Data in Alteryx

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