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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: ttest
Modelling – examining correlations: first, look at predictor distributions
This post follows on from the previous post, concerning the examination of variable distributions. It is always useful to plot the distribution of variables like item attributes e.g. item length in letters. One important benefit of doing so is identifying … Continue reading
Posted in 11. Modelling  distributions, modelling, rstats
Tagged describeBy, statistics, summary, ttest
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Modelling – examining correlations: first, look at predictor distributions
This post will take a more indepth look at the relationships between variables. A key property of experimental data is that we measure attributes – characteristics of people, stimuli, and behaviour – and that those measurements (the numbers) vary. Numbers … Continue reading
Posted in 11. Modelling  distributions, modelling, plotting data, rstats
Tagged density, distribution, grid, histogram, pdf, ttest
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