What is a way to group values and maintain the original data?

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One way to group values and maintain the original data is by using a pivot table in a spreadsheet program such as Microsoft Excel or Google Sheets. Pivot tables allow you to group and summarize data while still retaining the original values. You can also use other data visualization tools such as histograms, box plots, and scatter plots to group and analyze your data while still keeping the original data intact. Another option is to create a new column in your data set where you assign each value to a specific group or category, without deleting or overwriting the original data.