Use this calculation to reproduce a defined quantitative method when the observations, units, sampling process, and assumptions match the method shown here.

Values

Required list.

The cited overview of Statistics supplies background for the terminology and domain context used by this tool.^[1]

Calculate the semi-interquartile range, half the distance between the inclusive third and first quartiles. Inputs are interpreted exactly in the displayed units and the calculation returns the following fields without presentation rounding.

Quartile deviation

Returned number.

• A numerical result does not by itself establish data quality, causation, representativeness, independence, distributional fit, or practical significance.
• Use finite inputs in the displayed units, preserve source measurements and assumptions, and independently verify consequential decisions.

Inspect the underlying data, visualize its distribution, report uncertainty and sample size, and compare the result with a robust or domain-specific method where appropriate.

• Interquartile Mean Calculator

  Calculate the mean of the values between the inclusive first and third quartiles, ignoring outside extremes.

• Interquartile Range Calculator

  Calculate Q3 minus Q1 with the inclusive median-of-halves quartile method.

• Midhinge Calculator

  Calculate the midpoint of the inclusive first and third quartiles of a dataset.