dfr mean for expression

Creates a mean expression for an aggregation

Signature

> dfr mean

Examples

Mean aggregation for a group-by

> [[a b]; [one 2] [one 4] [two 1]]
    | dfr into-df
    | dfr group-by a
    | dfr agg (dfr col b | dfr mean)
╭───┬─────┬────────╮
│ # │  a  │   b    │
├───┼─────┼────────┤
│ 0 │ one │ 3.0000 │
│ 1 │ two │ 1.0000 │
╰───┴─────┴────────╯

dfr mean for lazyframe

Aggregates columns to their mean value

Signature

> dfr mean

Examples

Mean value from columns in a dataframe

> [[a b]; [6 2] [4 2] [2 2]] | dfr into-df | dfr mean
╭───┬────────┬────────╮
│ # │   a    │   b    │
├───┼────────┼────────┤
│ 0 │ 4.0000 │ 2.0000 │
╰───┴────────┴────────╯