by Erik Marsja | Sep 26, 2020 | Programming, Python
In this data analysis tutorial, you will learn how to carry out a Mann-Whitney U test in Python with the package SciPy. This test is also known as Mann–Whitney–Wilcoxon (MWW), Wilcoxon rank-sum test, or Wilcoxon–Mann–Whitney test and is a non-parametric hypothesis...
by Erik Marsja | Sep 17, 2020 | Programming, Python
In this Python tutorial, you will learn how to use pip to install a specific version of a package. The outline of the post (as also can be seen in the ToC) is as follows. First, you will get a brief introduction with examples on when you might need to install e.g. an...
by Erik Marsja | Sep 16, 2020 | Programming, Python
In Pandas, you can convert a column (string/object or integer type) to datetime using the to_datetime() and astype() methods. Furthermore, you can also specify the data type (e.g., datetime) when reading your data from an external source, such as CSV or Excel. ...
by Erik Marsja | Sep 8, 2020 | Programming, Python
In this Pandas tutorial, we are going to learn how to convert a NumPy array to a DataFrame object. Now, you may already know that it is possible to create a dataframe in a range of different ways. For example, it is possible to create a Pandas dataframe from a...
by Erik Marsja | Aug 30, 2020 | Programming, Python
In this short Pandas tutorial, you will learn how to make column index in a dataframe. Standarly, when creating a dataframe, whether from a dictionary, or by reading a file (e.g., reading a CSV file, opening an Excel file) an index column is created. For this reason,...
by Erik Marsja | Aug 27, 2020 | Programming, R
In this R tutorial, you will learn how to extract year from datetime in R. You will learn by a couple of examples containing R code along with a description of the code. To know how to extract year from datetime may be needed when working with data containing datetime...
