You're reading from Data Wrangling with R

Product typeBook

Published inFeb 2023

PublisherPackt

ISBN-139781803235400

Edition1st Edition

Concepts

Data Mining

Author (1)

Gustavo R Santos

Creating frequency data summaries in R

With the concepts we have studied so far, I believe that you will already have a sense of the relevance of a frequency table. As a data scientist, you will be expected to create a frequency table on many occasions to gain a greater understanding of data and to know what is happening more frequently.

We already know that histograms and bar plots are great ways to visualize frequencies, but graphics do not always show numbers – due to lack of space or just because they have not been set up that way. As such, a frequency table can come handy, especially if you want to see the top 5 or top 10 items with a little more background than just the pure graphic.

Even though we can create frequency tables for numeric variables, it is not very common – nor useful, depending on the amount of data – because you will be counting a lot of unique observations. Frequency tables are more related to categorical data; therefore, we are covering...

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Data Wrangling with R

Published in: Feb 2023Publisher: PacktISBN-13: 9781803235400

Author (1)

Gustavo R Santos

Gustavo R Santos has worked in the Technology Industry for 13 years, improving processes, and analyzing datasets and creating dashboards. Since 2020, he has been working as a Data Scientist in the retail industry, wrangling, analyzing, visualizing and modeling data with the most modern tools like R, Python and Databricks. Gustavo also gives lectures from time to time at an online school about Data Science concepts. He has a background in Marketing, is certified as Data Scientist by the Data Science Academy Brazil and pursues his specialist MBA in Data Science at the University of São Paulo
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Creating frequency data summaries in R

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