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I'm not an economics perofessional, but I understand currency exchange rates are calculating based on economic stands.

On the 14th of September, 2018 the currency exchange rate for Ethiopian Birr (ETB) dipped to 14 ETB for 1 USD. It was 27 ETB for 1 USD before and after that day.

What are the possible causes for such a dip and how can I find out?

ETB Exchange rate for the past month

1 Answer 1

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Seems like a data glitch. This chart does not show the same spike:

enter image description here

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  • What kind of data glitch? How does data flow? Commented Sep 27, 2018 at 5:53
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    You'd have to ask Google. I have no idea how they process data. It's not uncommon, though.
    – D Stanley
    Commented Sep 27, 2018 at 13:29
  • Just noting that the OP's chart is scaled from 10-30, so the dip goes way down (below 20). The chart in this answer is only scaled 27.45-28.20, so the "big" variation around September 12th ought to be scarcely visible on the original chart. That threw me for a minute.
    – Bobson
    Commented Oct 24, 2023 at 14:04

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