20 Questions A Journalist Should Ask About Poll Results … – Polls provide the best direct source of information about public opinion. They are valuable tools for journalists and can serve as the basis for accurate, informative ……

The Popularity of Data Analysis Software | r4stats.com – A debate has been taking place on the Internet regarding the relative place of Python and R. Ironically, this debate about software to do data analytics has involved ……

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Suppose I have a n by 2 matrix and a function that takes a 2-vector as one of its arguments. I would like to apply the function to each row of the matrix and get a n ……

Sample Size Calculator Terms: Confidence Interval & Confidence Level. The confidence interval (also called margin of error) is the plus-or-minus figure usually ……

1.3 R and statistics. Our introduction to the R environment did not mention statistics, yet many people use R as a statistics system. We prefer to think of it of an ……

Notes on the use of R for psychology experiments and questionnaires Jonathan Baron Department of Psychology, University of Pennsylvania Yuelin Li…

I’m new to R but I’ve made numerous correlation plots with smaller data sets. However, when I try to plot a large dataset (2gb+), I can produce the plot just fine ……

The specification is a written description of the invention and of the manner and process of making and using the same….