Open TradingFlowComparison groups: who belongs and who is missing
Decide from raw facts which names belong in a comparison, and keep missing ones visible.
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Apply what you just explored to a guided case with feedback, then to a new case on your own. It's optional: moving on and your study mark don't depend on it.
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Interactive steps are optional practice. Continue whenever you are ready; moving on does not mark this lesson as studied.