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Name:

Anscombe's Quartet of ‘Identical’ Simple Linear Regressions

Description:

Four x-y datasets which have the same traditional statistical properties (mean, variance, correlation, regression line, etc.), yet are quite different.

Variables:

A data frame with 11 observations on 8 variables.

x1 == x2 == x3	the integers 4:14, specially arranged
x4	values 8 and 19
y1, y2, y3, y4	numbers in (3, 12.5) with mean 7.5 and sdev 2.03

Link To Google Sheets:

Rows:

Columns:

Files:

Anscombe's Quartet of ‘Identical’ Simple Linear Regressions_351_59.csv

License Type:

Public Domain (CC0)

References/Notes/Attributions:

Source

Tufte, Edward R. (1989). The Visual Display of Quantitative Information, 13–14. Graphics Press.

References

Anscombe, Francis J. (1973). Graphs in statistical analysis. The American Statistician, 27, 17–21. doi: 10.2307/2682899.

R Dataset Upload:

Use the following R code to directly access this dataset in R.

d <- read.csv("https://www.key2stats.com/Anscombe_s_Quartet_of____Identical____Simple_Linear_Regressions_351_59.csv")