Statistics & probability

Summarize data, explore chance and understand uncertainty.

Showing 49–61 of 61 tools

Find a sample percentile, quartiles and IQR using an explicitly chosen convention.

Compare strict-below, at-or-below and midpoint-tie ranks for a value in a sample.

Group observations into equal-width bins with counts, relative frequencies and cumulative totals.

Fit a straight line to paired data and inspect correlation, residuals and a prediction.

Keep observations matched while summarizing individual changes and their spread.

Create rolling one-step forecasts without including the period being predicted.

Inspect prior-level forecasts and updated levels with a stated initialization and smoothing factor.

Evaluate aligned actual and predicted values with explicit bias and zero-denominator conventions.

Preserve pairing and use average tied ranks to describe monotonic association.

Compare three equal-weight averages of positive data and understand their different meanings.

Evaluate four fixed classification counts without hiding undefined metrics or changing the positive class.

Normalize category weights and compare uncertainty with an equal-category reference.

Build a finite probability distribution and inspect each outcome’s exact contribution to its expected value.