Anscombe's Quartet

Anscombe's quartet is data set consisting of four pairs of data with nearly identical descriptive statistics. but appear differently when plotted.

quartet

Format

A data frame with 11 cases and 8 variables:

x1

x for pair number 1.

y1

y for pair number 1.

x2

x for pair number 2.

y2

y for pair number 2.

x3

x for pair number 3.

y3

y for pair number 3.

x4

x for pair number 4.

y4

y for pair number 4.

Source

Table in Anscombe (1973).

References

Anscombe, F. J. (1973). Graphs in statistical analysis. American Statistician. 27 (1), 17-21. doi:10.1080/00031305.1973.10478966.

Wikipedia: Anscombe's quartet

Examples

data(quartet, package = "jeksterslabRdatarepo")
str(quartet)
#> 'data.frame':	11 obs. of  8 variables:
#>  $ x1: int  10 8 13 9 11 14 6 4 12 7 ...
#>  $ y1: num  8.04 6.95 7.58 8.81 8.33 ...
#>  $ x2: int  10 8 13 9 11 14 6 4 12 7 ...
#>  $ y2: num  9.14 8.14 8.74 8.77 9.26 8.1 6.13 3.1 9.13 7.26 ...
#>  $ x3: int  10 8 13 9 11 14 6 4 12 7 ...
#>  $ y3: num  7.46 6.77 12.74 7.11 7.81 ...
#>  $ x4: int  8 8 8 8 8 8 8 19 8 8 ...
#>  $ y4: num  6.58 5.76 7.71 8.84 8.47 7.04 5.25 12.5 5.56 7.91 ...
head(quartet)
#>   x1   y1 x2   y2 x3    y3 x4   y4
#> 1 10 8.04 10 9.14 10  7.46  8 6.58
#> 2  8 6.95  8 8.14  8  6.77  8 5.76
#> 3 13 7.58 13 8.74 13 12.74  8 7.71
#> 4  9 8.81  9 8.77  9  7.11  8 8.84
#> 5 11 8.33 11 9.26 11  7.81  8 8.47
#> 6 14 9.96 14 8.10 14  8.84  8 7.04