polars.LazyFrame.var#

LazyFrame.var(ddof: int = 1) LDF[source]#

Aggregate the columns in the DataFrame to their variance value.

Examples

>>> df = pl.DataFrame({"a": [1, 2, 3, 4], "b": [1, 2, 1, 1]}).lazy()
>>> df.var().collect()
shape: (1, 2)
┌──────────┬──────┐
│ a        ┆ b    │
│ ---      ┆ ---  │
│ f64      ┆ f64  │
╞══════════╪══════╡
│ 1.666667 ┆ 0.25 │
└──────────┴──────┘