Scientists often plan for studies by calculating how many subjects or units need to be tested in order to find an effect. That is, they plan for a study using statistical power according to principles of hypothesis testing. Sample size calculations are usually required in ethics applications and grant proposals to justify the study. We previously learned how to calculate
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Jupyter notebooks are a scientific computing development platform that can run many different programming languages, including Python via the interactive Python interpreter IPython. The key advantage in a notebook environment is that code can be sectioned into cells for testing while retaining all the interactive features of IPython, including magic commands. IPython magics are a specialised set of commands hosted
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In a previous post we learned how to perform an independent t-test in R to determine whether a difference between two groups is important or significant. In this post we will learn how to perform the same test using the Python programming language. Along the way we will learn a few things about t distributions and calculating confidence intervals. dataset.In
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Comma separated values (CSV) files are a type of text file commonly used to store data. In a CSV file, each line of text contains values separated with commas. CSV files can be imported into Python in different ways (eg. csv.reader, numpy.loadtxt, etc). One useful method is to import CSV files into Pandas dataframes. Pandas package. Pandas is a Python
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I have completed undergraduate level research, a Master’s degree, a PhD, and two post-docs, yet I have never been taught or told how I should organize the files and folders related to a project. Being organized is essential in most aspects of life, and this is particularly trying when conducting research. I only found a few online examples of blogs
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You can detect errors in your code using if statements, as we did in the first post, or you can detect them using the try-except structure, as we did in the second and third posts. With both of these approaches, we used the print command to provide the user with some information about the error and the sys.exit() command to
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