<p>I don't think the issue is that they don't have the data. I think they're just showing the data at a lower sampling rate.</p>

<p>This chart draws data from three locations:</p>

<ul>
<li><p><a href="https://api.bitcoinaverage.com/history/USD/per_minute_24h_sliding_window.csv" rel="nofollow">https://api.bitcoinaverage.com/history/USD/per_minute_24h_sliding_window.csv</a><br>
Updates once per minute, but only has 24 hours of data.</p></li>
<li><p><a href="https://api.bitcoinaverage.com/history/USD/per_hour_monthly_sliding_window.csv" rel="nofollow">https://api.bitcoinaverage.com/history/USD/per_hour_monthly_sliding_window.csv</a><br>
Updates once per hour, but only has a month of data.</p></li>
<li><p><a href="https://api.bitcoinaverage.com/history/USD/per_day_all_time_history.csv" rel="nofollow">https://api.bitcoinaverage.com/history/USD/per_day_all_time_history.csv</a><br>
Updates once per day, but has all data.</p></li>
</ul>

<p>Note how the data that goes back further is less precise.</p>

CC BY-SA 3.0
2015-03-15T21:46:02.723Z
thanks. that is actually noticeable now you mention it - the last hour is more precise than the time before it.
mulllhausen
CC BY-SA 3.0
2015-03-15T18:58:01.747Z
2015-03-15T18:58:01.747Z
Nick ODell
<p>i noticed that from the 13th of feb 2015 the bitcoin price becomes a lot more "noisy" on <a href="https://bitcoinaverage.com/charts#USD-averages-false" rel="nofollow noreferrer">bitcoinaverage.com</a>:</p>

<p><img src="https://i.sstatic.net/atv4L.png" alt="price noise"></p>

<p>does anybody know whether this is actually due to bitcoin price movements becoming more rapid, or whether its just that bitcoinaverage.com increased their sampling frequency?</p>

<exchange-rate><historical-trade-data>
bitcoinaverage.com price precision
mulllhausen
# bitcoinaverage.com price precision

(Asked by: username_0 on 2015-03-15)

i noticed that from the 13th of feb 2015 the bitcoin price becomes a lot more "noisy" on [bitcoinaverage.com](https://bitcoinaverage.com/charts#USD-averages-false):

![price noise](https://i.sstatic.net/atv4L.png)

does anybody know whether this is actually due to bitcoin price movements becoming more rapid, or whether its just that bitcoinaverage.com increased their sampling frequency?

**Tags:** exchange-rate, historical-trade-data


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## 1 answers

### Answer by username_1 on 2015-03-15. Score: 2 | Accepted answer

I don't think the issue is that they don't have the data. I think they're just showing the data at a lower sampling rate.

This chart draws data from three locations:

* <https://api.bitcoinaverage.com/history/USD/per_minute_24h_sliding_window.csv>  
  Updates once per minute, but only has 24 hours of data.
* <https://api.bitcoinaverage.com/history/USD/per_hour_monthly_sliding_window.csv>  
  Updates once per hour, but only has a month of data.
* <https://api.bitcoinaverage.com/history/USD/per_day_all_time_history.csv>  
  Updates once per day, but has all data.

Note how the data that goes back further is less precise.

> **Comments:**
> **username_0**: thanks. that is actually noticeable now you mention it - the last hour is more precise than the time before it.  

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