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- Anscombes_quartet abstract "Anscombe's quartet comprises four datasets that have nearly identical simple statistical properties, yet appear very different when graphed. Each dataset consists of eleven (x,y) points. They were constructed in 1973 by the statistician Francis Anscombe to demonstrate both the importance of graphing data before analyzing it and the effect of outliers on statistical properties.For all four datasets:The first scatter plot (top left) appears to be a simple linear relationship, corresponding to two variables correlated and following the assumption of normality. The second graph (top right) is not distributed normally; while an obvious relationship between the two variables can be observed, it is not linear, and the Pearson correlation coefficient is not relevant (a more general regression and the corresponding coefficient of determination would be more appropriate). In the third graph (bottom left), the distribution is linear, but with a different regression line, which is offset by the one outlier which exerts enough influence to alter the regression line and lower the correlation coefficient from 1 to 0.816 (a robust regression would have been called for). Finally, the fourth graph (bottom right) shows an example when one outlier is enough to produce a high correlation coefficient, even though the relationship between the two variables is not linear.The quartet is still often used to illustrate the importance of looking at a set of data graphically before starting to analyze according to a particular type of relationship, and the inadequacy of basic statistic properties for describing realistic datasets.The datasets are as follows. The x values are the same for the first three datasets.A procedure to generate similar data sets with identical statistics and dissimilar graphics has since been developed.".
- Anscombes_quartet thumbnail Anscombes_quartet_3.svg?width=300.
- Anscombes_quartet wikiPageExternalLink m28709.
- Anscombes_quartet wikiPageExternalLink Visualisation.html.
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- Anscombes_quartet wikiPageWikiLink Anscombes_quartet.
- Anscombes_quartet wikiPageWikiLink Category:1973_in_science.
- Anscombes_quartet wikiPageWikiLink Category:1973_introductions.
- Anscombes_quartet wikiPageWikiLink Category:Misuse_of_statistics.
- Anscombes_quartet wikiPageWikiLink Category:Statistical_charts_and_diagrams.
- Anscombes_quartet wikiPageWikiLink Category:Statistical_data_sets.
- Anscombes_quartet wikiPageWikiLink Coefficient_of_determination.
- Anscombes_quartet wikiPageWikiLink Correlation_and_dependence.
- Anscombes_quartet wikiPageWikiLink Data_set.
- Anscombes_quartet wikiPageWikiLink Exploratory_data_analysis.
- Anscombes_quartet wikiPageWikiLink File:Anscombes_quartet_3.svg.
- Anscombes_quartet wikiPageWikiLink Frank_Anscombe.
- Anscombes_quartet wikiPageWikiLink GeoGebra.
- Anscombes_quartet wikiPageWikiLink Linear_regression.
- Anscombes_quartet wikiPageWikiLink Mean.
- Anscombes_quartet wikiPageWikiLink Normal_distribution.
- Anscombes_quartet wikiPageWikiLink Outlier.
- Anscombes_quartet wikiPageWikiLink Pearson_product-moment_correlation_coefficient.
- Anscombes_quartet wikiPageWikiLink Robust_regression.
- Anscombes_quartet wikiPageWikiLink Scatter_plot.
- Anscombes_quartet wikiPageWikiLink Statistician.
- Anscombes_quartet wikiPageWikiLink Variable_(mathematics).
- Anscombes_quartet wikiPageWikiLink Variance.
- Anscombes_quartet wikiPageWikiLinkText "Anscombe's quartet".
- Anscombes_quartet wikiPageUsesTemplate Template:R_from_modification.
- Anscombes_quartet wikiPageUsesTemplate Template:Reflist.
- Anscombes_quartet subject Category:1973_in_science.
- Anscombes_quartet subject Category:1973_introductions.
- Anscombes_quartet subject Category:Misuse_of_statistics.
- Anscombes_quartet subject Category:Statistical_charts_and_diagrams.
- Anscombes_quartet subject Category:Statistical_data_sets.
- Anscombes_quartet type Chart.
- Anscombes_quartet type Redirect.
- Anscombes_quartet comment "Anscombe's quartet comprises four datasets that have nearly identical simple statistical properties, yet appear very different when graphed. Each dataset consists of eleven (x,y) points.".
- Anscombes_quartet label "Anscombe's quartet".
- Anscombes_quartet label "Anscombes quartet".
- Anscombes_quartet sameAs Q2554672.
- Anscombes_quartet sameAs Anscombe-Quartett.
- Anscombes_quartet sameAs Cuarteto_de_Anscombe.
- Anscombes_quartet sameAs Anscombei_kvartett.
- Anscombes_quartet sameAs Anscomberen_laukote.
- Anscombes_quartet sameAs Quartet_dAnscombe.
- Anscombes_quartet sameAs アンスコムの例.
- Anscombes_quartet sameAs Kwartet_van_Anscombe.
- Anscombes_quartet sameAs Anscombes_kvartett.
- Anscombes_quartet sameAs Kwartet_Anscombea.
- Anscombes_quartet sameAs Quarteto_de_Anscombe.
- Anscombes_quartet sameAs m.02pz_7g.
- Anscombes_quartet sameAs Квартет_Энскомба.
- Anscombes_quartet sameAs Anscombeov_kvartet.
- Anscombes_quartet sameAs Квартет_Анскомбе.
- Anscombes_quartet sameAs Q2554672.
- Anscombes_quartet sameAs 安斯库姆四重奏.
- Anscombes_quartet wasDerivedFrom Anscombes_quartet?oldid=573492339.
- Anscombes_quartet wasDerivedFrom Anscombes_quartet?oldid=695520577.
- Anscombes_quartet depiction Anscombes_quartet_3.svg.
- Anscombes_quartet isPrimaryTopicOf Anscombes_quartet.