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I'm about to hand off a summary of this column and I have no idea if it's symmetric, lopsided, or has two humps.
What you'll have at the end
A histogram plus one skew number that says whether the column leans left, right, or sits roughly in the middle.
You need
A numeric column with enough rows to show a real shape, loaded in a spreadsheet or table, along with whatever other columns the same export carries in case a cluster shows up and needs explaining.
Not covered
Running a formal statistical test for normality, or fitting a proper mixture model to the two groups; this recipe only decides whether one shared average is honest to report.
Pick the average that represents a skewed column
Go here once you know the column is genuinely skewed, not bimodal, and you're ready to choose between reporting the mean or the median.
An outlier is dragging your summary numbers off track
Use this instead when only one row looks strange and the rest of the column is fine, a single suspicious value rather than two real groups.
Checked 26 Aug 2026
Part of the Descriptive Statistics cookbook