What DiffTest does
 It is a calculator for analyzing sensory difference data.
 It is a versatile tool when seeking to show that products differ.
 It is incomparable when seeking to show that products are similar
 It calculates directional and nondirectional statistical
significance of results.
 It calculates confidence
bounds around the best
estimate of success probability
 It calculates the Discrimination
index corresponding to the best estimate and its confidence bounds
 It analyses any type of forcedchoice
difference test.
 It can analyse any other data consisting of frequencies of two types,
such as, right/wrong, agree/disagree, better/worse, male/female, sweeter/less sweet.
 It can analyse the agreement of data from a sample with what would be
expected from any particular population.
 It uses exact probabilities, not approximations based on statistical distributions.
 It is a powerful simulation and design tool for planning sensory tests.
How to use DiffTest
To use the calculator, just give any number in bold type (any of the 7
numbers in the top, right corner of the calculator) a new value. All
the other numbers that depend on it will change immediately.
To select a window to change, you can
 Point to it with the mouse and drag over the number (or the part of it that you want to edit)
 Press the <Tab> key repeatedly to step through all the selectable numbers in turn.
Pressing <Shift> and <Tab> together steps in the reverse direction.
After selecting a number, you can type in new digits to replace what you had selected.
