May 2025
Beginner
178 pages
4h 50m
English
Content preview from Data Science Foundations
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9 BASIC CONCEPTS
In the world of data science, we often talk about data points, averages and trends. However, understanding the variability and uncertainty inherent in data is just as crucial. Measures of spread and probability provide us with the tools to do just that. This chapter will explore these fundamental concepts in an approachable way, helping you to build a solid foundation for more advanced data analysis.
AVERAGES
Mean, median and mode are measures of central tendency that summarise a data set with a single value representing the ‘centre’, or typical, value. Each measure has its own advantages and disadvantages, making them suitable for different types of data and analysis.
Mean (arithmetic average)
Definition: The mean is calculated ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.