Intro
In Analyzer, you can set "Outlier Filters" on a multiline line chart. This allows you to filter out any lines with points above, below, or in between the value or values you set. If any point on a line does not pass the filter, that entire line is filtered out.
You configure Outlier Filters in Chart Properties > Outlier Filters. There are two properties in Outlier Filters to be aware of:

Show When Points Above. Filters your line chart to show only those lines with any values above the value you specify.

Show When Points Below. Filters your line chart to show only those lines with any values below the value you specify.
Note that any values above the filter set in Show When Points Above or below the filter set in Show When Points Below count toward this filter. So if you entered 5000 for the Show When Points Above property, and only one point exceeded 5000, the line would still appear.
You can use Show When Points Above and Show When Points Below in tandem, to show only those lines within a given range. You do this by entering a larger value in Show When Points Below than in Show When Points Above. Again, note that if any point on a line falls outside the range you set, the line does not appear. If no lines have all points within the filter range, a "No data in filtered range" error appears.
Example
Dottie Birch is the Social Media Marketing manager for her company, Kablinko Toys. She owns the following card that shows all visits to the company website from various social media networks made between January and March in 2014.
Because there are so many social media networks represented here, the chart is difficult to read. Dottie decides to filter the chart to show only those networks that brought in more than 1,300 visitors. She enters the number 1300 for the Show When Points Above property. The chart then filters out all networks without any points at or above 1,300. The only two networks that pass the filter are Facebook and Twitter:
Dottie can also take the opposite approach and show all lines with points below a given threshold. She deletes the value from Show When Points Above and enters the value 53 for Show When Points Below. The chart now filters out all lines with no points at or below 53. Only Pinterest, YouTube, Google+, and LinkedIn have values this low, so these are the lines that remain:
Finally, Dottie decides to try filtering out all lines with outlier values and leaving the others. She sets Show When Points Above to 50 and Show When Points Below to 800. The only three social networks that pass both filters are Pinterest (with a low value of 50 and a high value of 614), YouTube (50 and 744), and Google+ (50 and 662). All of the other networks have values that are two low, too high, or both, and therefore are filtered out of the chart.
Setting outlier filters
To set outlier filters on a Line chart,

Select Outlier Filtering in Chart Properties.

Do one of the following:

To filter to show only those lines with any points ABOVE a certain value, enter that value for Show Points Above.

To filter to show only those lines with any points BELOW a certain value, enter that value for Show Points Below.

To filter to show only those lines with all points within a certain range of values, enter the minimum value in Show Points Above and the maximum value in Show Points Below.

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