Introduction to Statistics for Data Science
2. Grouping and Displaying Data to Convey Meaning (Tables and Graphs)
2.1. How can we arrage data?
For data to be useful, our data points and observations must be organized so that we can pick our patterns and come to concrete conclusions.
Statisticians select their observations so that all relevant groups are considered and represented in the data. As an example, to determine the potential market for a new product, analysts might study 100 consumers in a certain geographical area. Analysts must consider and be certain that this data group contains people representing variables such as income, race, education etc.