Working with factors and categorical variables. Use forcats in R programming to change factor levels

The video tutorial by Greg Martin covers the concept of factors and levels in R, focusing on the use of the Tidyverse and 4cats packages. It explains various methods to manipulate and reorder factor levels, including manual changes, reordering based on values, and collapsing levels. The tutorial also demonstrates how to use additional data provided by 4cats for practice and visualization, emphasizing the importance of replicating examples for effective learning.

How does the 'unique' function work in the context of factors?

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What are the steps to create a new variable based on the average of another variable?

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Explain how to collapse factor levels in R.

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What is the importance of ordering factor levels in data visualization?

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