Summary
Contents
Subject index
Learning Statistics Using R distinguishes itself by not only teaching statistics in a straightforward and concise manner, but by also having clear explanations of how to run and utilize R, a free statistical package that has an extensive library of functions. Covering a wide range of topics from statistical topics of probability and sampling distribution to statistical theorems and chi-square, with this book students will not only learn how to use a formula to calculate a statistic, but also how the specific statistic fits into the overall research process from start to finish. Overall, statistics is placed in the context of conducting research to answer statistical hypotheses, all while using discussion, explanations, and examples that include R functions to enrich students' understanding of statistics.
Graphing Data
Graphing Data
Basic Graph Functions
The graphical display of data is very important in understanding the type of variables in your study. The type of graph depends on the variable level of measurement, that is, are variable values nominal, ordinal, interval or ratio. Different types of graphs are therefore used depending on the data. We will explore some of the popular ways data are displayed using R functions.
Pie Chart
The pie chart is used to display frequency counts or percents in mutually exclusive categories. It is displayed as a circle that is partitioned into the different mutually exclusive categories. The set of mutually exclusive categories in the pie chart should be exhaustive so that the category values sum to 100%. The pie chart uses summary or ...
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