QuantifyIt is a minimalist numeric and statistical package for Java 6 or better.

On the numeric side,

It introduces a new Decimal? object that replaces BigDecimal, offering the same precision without all the quirks associated with it.

Some of the benefits of Statistical tools currently supported:

Averages:

• Mean
• Median
• Mode

Dispersion:

• Variance (population and sample)
• Standard Deviation (population and sample)
• Conversion between Variance and Standard Deviation (and viceversa)
• Min
• Max
• Range

Summaries for both population and samples:

• Mean
• Standard Deviation