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Options

Worked examples

The How-To pages build this chart step by step from sample data, one walkthrough per data layout the tool accepts. Start there if you would rather see a finished result than read the settings.

Confidence Level (%)

The probability (for example 95%) that the interval truly captures the specified proportion of the population. It is written \(C\) in the Math Details, as a fraction between 0 and 1.

Percent of Population (%)

The minimum proportion of the population (for example 95%) that the interval is required to contain. It is written \(P\) in the Math Details, as a fraction between 0 and 1.

Interval Side

  • Two-Sided: a lower and an upper bound that together contain the proportion.
  • One-Sided Lower: a lower bound such that at least the stated proportion lies above it.
  • One-Sided Upper: an upper bound such that at least the stated proportion lies below it.