OPEN-SOURCE SCRIPT
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Z-score change

As a wise man once said that:
1. beginners think in $ change
2. intermediates think in % change
3. pros think in Z change

Here is the "Z-score change" indicator that calculates up/down moves normalized by standard deviation (volatility) displayed as bar chart with 1,2 and 3 stdev levels.
Phát hành các Ghi chú
Add reference doc., cleanup code and chart.
Phát hành các Ghi chú
More accurate calculation based on Investopedia's Z-score definition
Phát hành các Ghi chú
Clean up and update chart
Phát hành các Ghi chú
Add "Source" setting (default to "close" time series), remove "Gaps" setting

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