Design Express

• Have you every tried to design a fully-balanced round-robin experiment?
• Are your designs balanced for carry-over effects and order effects?
• Have you ever tried to balance order of trial in an incomplete block design from a textbook?

Design Express is the answer to all of these statistics problems and more.

Design Express has been designed by statisticians for use by non-statisticians. At the touch of a single button the software chooses from a wide range of designs for single and multi-session experiments.

Design Express is easy to use…

• Easy specification of requirements
• ‘Blinding’ codes generated randomly in a variety of formats…
• ..or can use existing sample codes
• Designs can be copied directly into Excel, with its associated functionality
• Designs can be saved for import to sensory data collection packages
• Design properties can be readily inspected: order, concurrence, carry over

Design Express Main Features

• Complete block designs for single or multi-session experiments
• Incomplete block designs for single or multi-session experiments
• Designs that have balance for presentation order effects
• Designs that have balance for carry-over effects
• The software draws from a comprehensive library of over 400 balanced incomplete block designs
• Optimal search algorithms for best possible balance when library designs are not available
• Allows designs with up to 51 samples and 435 consumers

A unique feature of Design Express is the ability to construct appropriate designs when a complete set of samples is presented to all consumers over a number of sessions.

Design Express is the result of an ongoing collaboration between Qi Statistics Ltd and Product Perceptions Ltd.