Transcription of Data, Covariance, and Correlation Matrix
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Data, Covariance, and Correlation MatrixNathaniel E. HelwigAssistant Professor of Psychology and StatisticsUniversity of Minnesota (Twin Cities)Updated 16-Jan-2017 Nathaniel E. Helwig (U of Minnesota)Data, Covariance, and Correlation MatrixUpdated 16-Jan-2017 : Slide 1 CopyrightCopyrightc 2017 by Nathaniel E. HelwigNathaniel E. Helwig (U of Minnesota)Data, Covariance, and Correlation MatrixUpdated 16-Jan-2017 : Slide 2 Outline of Notes1) The Data MatrixDefinitionPropertiesR code2) The Covariance MatrixDefinitionPropertiesR code3) The Correlation MatrixDefinitionPropertiesR code4) Miscellaneous TopicsCrossproduct calculationsVec and KroneckerVisualizing dataNathaniel E.
The Data Matrix R Code Row and Column Means > # get row means (3 ways) > rowMeans(X)[1:3] Mazda RX4 Mazda RX4 Wag Datsun 710 29.90727 29.98136 23.59818
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