R StatisticsLesson 29Free preview

R Statistics Intro

This lesson is part of R · All levels

Summary

This lesson leads the developer to the foundation of descriptive statistical computing in R. Descriptive analysis aims to summarize the important features of a data set without making population inferences. This lesson reviews the size of data centering (central tendency), the size of distribution (variability), as well as the versatile summary function.

Key points

Descriptive statistics summarize and describe the characteristics of sample datasets
Includes the size of the centering (mean, median, mode) and the distribution (range, variance, standard deviation)
The 'summary()' function produces five-fold statistics plus the mean value
The 'quantile()' function calculates the quartile dots and the data distribution percentiles

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