anscombe: Anscombe's Quartet of ‘Identical’ Simple Linear Regressions

In astamm/teachr: Tutorials for Teaching Tidyverse-Based R Basics

Anscombe's Quartet of ‘Identical’ Simple Linear Regressions

Description

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

Usage

anscombe

Format

A tibble with 11 observations of 8 variables:

x1

Vector of integers between 4 and 14.

x2

Same vector as x1.

x3

Same vector as x1.

x4

Vector containing 8's and 19's.

y1

Numbers between 3 and 12.5 with mean 7.5 and standard deviation 2.03 to be analysed together with x1.

y2

Numbers between 3 and 12.5 with mean 7.5 and standard deviation 2.03 to be analysed together with x2.

y3

Numbers between 3 and 12.5 with mean 7.5 and standard deviation 2.03 to be analysed together with x3.

y4

Numbers between 3 and 12.5 with mean 7.5 and standard deviation 2.03 to be analysed together with x4.

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.

astamm/teachr documentation built on Jan. 12, 2023, 7:21 a.m.