Hello, i am attaching a workbook that has list of my customers and their cost. i have a category filter. i like to get the standard deviation for the list of my customers by category.
sheet 2 has each customer and their cost. I like to get the standard deviation for that list by category.
sheet 3 has my category only and average cost by category. how can i get the standard deviation for each category?
what is the best way to do this? thanks!
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