Hi Anshuli,

Follow below steps:

1. Create a line chart with required points.

2. Create a calculated field to find the avg for the points lying in the sheet.

AVG = WINDOW_AVG(SUM([Sales]))

3. Create another calculated field to find standard deviation of the points on the sheet.

SD = WINDOW_STDEV(SUM([Sales]))

4. Create another sheet to find the boundary line of the line chart to find outliers.

Upper = AVG + SD, Lower = AVG - SD .

5. Use created fields as reference lines and show the line chart to show outliers.

Hope this helps you.