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R Programming

Collecting Tweets Using TwitterR

What is the Twitter Search API? The Twitter search API, one of three such APIs (search, streaming, “firehose“), allows access to a subset of popular or recent tweets (in the last 4-6 days). That is, it allows querying past tweets (though a…

Hypothesis Testing

The objective of testing statistical significance of  (also ) by stating that we want to test the validity of the null hypothesis (HN), that the true population parameter β=0 against the alternative hypothesis (HA) that is different from…

Linear Regression Analysis using R

One of the most frequent used techniques in statistics is linear regression where we investigate the potential relationship between a variable of interest (often called the response variable but there are many other names in use) and a set…