Statistics - (Data|Data Set) (Summary|Description) - Descriptive Statistics

About

Summary are a single value summarizing a array of data.

They are:

• selected
• or calculated through reduction operations.

They are an important element of descriptive analysis

One of the most important tools for summarizing data is to display it visually. See the Anscombe's quartet to understand why ?

From a summary, you can make an inference on a individual without looking at the distribution

Same as: Function - (Aggregate | Aggregation)

Articles Related

Statistics

statistic

Measures of center

In order to summarize a set of data, we want to use one single number or value to describe where it is centred.

This single value can be calculated through one of the following (statistic|measure) of center:

• the mean,
• the median,
• and the mode

(Spread|Variability|Dispersion)

Another important element of a data set is how it is spread.

Measures of spread:

• range,
• inter-quartile range,
• standard deviation
• variance

Others

• count (sample size)
• minimum
• maximum
• sum
• frequency
• bin (??)
• histogram
• skew
• Kurtosis
• wiki/Five-number_summary
• Cryptography - Hash

Library

Apache Math Package specifically DescriptiveStatistics