The deck
The curves, the price spectrum and the key insights.
01 / Four questions
Four questions about price.
Map the four price-perception questions in your file: too cheap, cheap, expensive and too expensive.
Each must hold numbers, in one currency. Add a subgroup — region, segment, channel or plan tier — and the whole analysis runs again for each group.
Before it runs
- Variables — the four roles, or a saved mapping from an earlier run.
- Missing data and filters — how gaps are handled and who is included.
- Subgroup — optional; each group needs at least 30 usable respondents, and smaller ones are listed as excluded.
02 / Answers that add up
Only answers that hold together.
A respondent counts only if their four prices rise in order — too cheap below cheap, below expensive, below too expensive.
The rest are set aside before anything is drawn, and the run needs at least 30 respondents left. Below that it stops and says how many it found, rather than drawing curves from too few.
03 / The range
Where the curves cross is your range.
Four cumulative curves cross at four price points — the floor, the ceiling, and two points inside.
Range low (PMC) and range high (PME) bound the acceptable range. The optimal price (OPP) is where the fewest reject it on price at either extreme; the indifference point (IPP) is where as many call it cheap as expensive.
How the crossings are found
Crossings are interpolated between the prices respondents gave, so a price point can fall between them. If two curves never cross, that point is reported as missing rather than guessed. The range’s width is reported too, in money and as a share of its midpoint.
04 / The answer
Get the range, in a deck.
The PowerPoint shows the price spectrum, the four price points and what they mean.
Sample and methodology · Price sensitivity curves, as an editable chart · Price spectrum analysis · Key insights · Conclusion — or, with a subgroup, the same for every group.