An R Introduction to Statistics

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Category Statistics

A tutorial on computing numerical measures of qualitative data in a data sample.

Pie Chart

A tutorial on computing the pie chart of qualitative data in statistics.

Bar Graph

A tutorial on computing the bar graph of qualitative data in statistics.

Frequency Distribution of Qualitative Data

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

Qualitative Data

fractal-07h A data sample is called qualitative, also known as categorical, if its values belong to a collection of known defined non-overlapping classes. Common examples include student letter grade (A, B, C, D or F), commercial bond rating (AAA, AAB, ...) and consumer clothing shoe sizes (1, 2, 3, ...).