An R Introduction to Statistics

MASS

Point Estimate of Population Mean

A tutorial on computing the point estimate of population mean from a simple random sample.

Interval Estimation

fractal-01h It is a common requirement to efficiently estimate population parameters based on simple random sample data. In the R tutorials of this section, we demonstrate how to compute the estimates. The steps are to be illustrated with a built-in data frame named survey. It is the outcome of a Statistics student survey in an Australian university.

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, ...).