Hi there!

You're correct in assuming that the changes could come from multiple sources. 

And in an interview, you should do exactly this - communicating to the interviewer in a structured manner what are all the possible, data-driven hypotheses that you could launch from each point.

In terms of how to structure it, I'd recommend you start by picking a relevant data point, explaining what it means (i.e., what is the take-away), then explaining what are the implications for the client (recommendation / hypothesis / next steps). 

Best,
Cristian

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Hi there,

Absolutely! When situations like this cocur, you absolutely want to double-check and use your judgement to check assumptions.