An R Introduction to Statistics

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Cumulative Relative Frequency Distribution

A tutorial on computing the cumulative relative frequency distribution of quantitative data in statistics.

Relative Frequency Distribution of Quantitative Data

A tutorial on computing the relative frequency distribution of quantitative data in statistics.

Data Frame

A tutorial on the concept of data frames in R. Using a build-in data set sample as example, discuss the topics of data frame columns and rows. Explain how to retrieve a data frame cell value with the square bracket operator. Plus a tips on how to take preview of a data frame.