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Recent Posts
 Getting started — loading data, writing and saving scripts January 16, 2014
 Getting started – getting helped January 16, 2014
 Getting started — Installation of RStudio and some packages + using ggplot() to make a simple plot January 16, 2014
 Postgraduate data analysis and interpretation January 16, 2014
 Mixedeffects modeling — four hour workshop — part IV: LMEs November 5, 2013
Tag Archives: correlation
Modelling – examining correlations among predictors
In a previous post, we used merge() to create a joint database holding a large set of data on the attributes of the 160 words presented in a lexical decision experiment whose completion I supervised a while ago. I would … Continue reading
Modelling – examination correlations: advanced scatterplots
This post will focus exclusively on the relationships between pairs of variables. We will be looking at the item norms data, though you might want to practice the R procedures we deploy on the subjects data (see earlier posts here, … Continue reading
Posted in 12. Modelling  scatterplots+, modelling, rstats
Tagged correlation, scatterplot
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Modelling – examining the correlations between predictor variables
This post will consider how to explore the relationship between a set of variables: variables that we will ultimately use in a mixedeffects analysis of lexical decision data. Most of the analyses we will be doing will examine whether observed … Continue reading
Posted in 10. Modelling  collinearity, modelling, rstats
Tagged collinearity, correlation, multicollinearity, regression
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Getting started – drawing a scatterplot, with a linear regression smoother, edited title, label and theme, for report
This post assumes that you have installed and are able to load the ggplot2 package, that you have been able to download the ML subject scores database and can read it in to have it available as a dataframe in … Continue reading →