I'm confused with graphs...?
In the attached graph, how would you prove the vector of the graph. This is a profile of AMZN over 28 days. Start point = $1785.88, end point = $1751.60.
(+$1785.88 – +$1751.60) / 28 days = $34.28 / 28 days ≈ +$1.22 / day = +1.92% / day.
This is obviously not right. It's -1.92% / day on average. But how to prove this?
Support much appreciated. Thanks.
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