'sample data'

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Description

An example for the data input.

Usage

1
data("sample_data")

Format

A data frame with 22000 observations on the following 4 variables.

V1

a factor with levels

V2

a numeric vector

V3

a numeric vector

V4

a numeric vector

Details

The input data must be same as the sample data.

Source

nothing

References

2016 tutorial

Examples

1
2
data(sample_data)
## maybe str(sample_data) ; plot(sample_data) ...

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