Browse tools (13–24 of 100)

Build the interval around a proportion or a mean — the range the truth plausibly occupies.

Measure response and completion rates, and size the outreach a target sample requires.

Estimate how many days of fieldwork a target sample will take at your outreach pace.

Compute Net Promoter Score from response counts, with margin of error and benchmarks.

Turn a 5-point response distribution into mean score, top-2-box, and a readable verdict.

Build a defensible market research budget from sample, incentives, and analysis effort.

Value research as decision insurance: what is reducing the risk of a wrong call worth?

Two-proportion z-test: is the difference between two percentages real or noise?

Net present value with a full discounting table — the gold-standard test of whether a project creates value.

Internal rate of return on any cash flow series — with the honesty checks IRR needs.

How fast do you get your money back — simple and discounted.

Discounted cash flow valuation with growth, terminal value, and full transparency.