Groupby.mean

Obtain the mean per groups for each column(s)

danfo.Series.mean() [source]

Parameters: None

Return: DataFrame

Examples

Obtain the mean of a column for each group, group by one column

const dfd = require("danfojs-node")

let data ={A: ['foo', 'bar', 'foo', 'bar',
                'foo', 'bar', 'foo', 'foo'],
           B: ['one', 'one', 'two', 'three',
                'two', 'two', 'one', 'three'],
           C: [1,3,2,4,5,2,6,7],
           D: [3,2,4,1,5,6,7,8]
}

let df = new dfd.DataFrame(data)


let grp = df.groupby(["A"])
grp.col(["C"]).mean().print()

Obtain the mean for two columns for each group, group by one column

Obtain the mean for a column for each group, group by two columns

Obtain the mean for two columns for each group, group by two columns

PreviousGroupby.sumNextGroupby.std

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