July 2017
Beginner to intermediate
715 pages
17h 3m
English
Content preview from Java: Data Science Made Easy
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Exploratory data analysis in Java
Exploratory Data Analysis is about taking a dataset and extracting the most important information from it, in such a way that it is possible to get an idea of what the data looks like. This includes two main parts:
The summarization step is very helpful for understanding data. For numerical variables, in this step we calculate the most important sample statistics:
- The extremes (the minimal and the maximal values)
- The mean value, or the sample average
- The standard deviation, which describes the spread of the data
Often we consider other statistics, such as the median and the quartiles (25% and 75%).
As we have already seen in the previous chapter, Java offers a great set of tools for data preparation. The ...
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