Standard deviation chart is a good tool to explore your data and gain insights about outliers in your data. The standard deviations show how far a data point is away from the mean (average) and allows you to create segway's for further analysis.
To create this chart you would need the following steps.
Step 1: Create your view and format your Axis's
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Step 2: Calculate the mean of your data
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Step 3: Create your Standard deviation calculation
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Step 4: Create a parameter to make your standard deviation dynamic
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Step 5: Create Upper and lowe bounds
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Step 6: Create your outside of bounds calculation to highlight outliers
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Step 7: add your calculations to your tooltips as need and add reference bands to view.
( the most important one to keep in your tooltips or on detail is your upper and lower bounds to reference at a later point)
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then
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& add average lines
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Step 8: add outside bounds calculation to colour
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we see a few points that fall outside our standard deviation which would then spark further exploration.