In the absence of an off-the-shelf sample size calculator, we can use a simulation approach to explore the effects of a range of sample sizes on the power to detect a desired treatment effect with sufficient confidence.
read moreOur client, a manufacturer of consumer goods, became aware through customer feedback that a batch of one of their products contained an unusually high level of defects. The manufacturer wanted to take steps to avoid a repeat of this incident, but with full inspection of every product being prohibitively expensive, what could they put in place to reduce the risk of future bad batches entering the market?
read moreUnex market the Pet Remedy product which is designed to provide relaxing and calming relief for pet stress. To support their product, Select helped to conduct a study to test the effectiveness of their treatment for dogs with behavioural issues.
read moreMany businesses use online marketing strategies to increase the number of visitors to their websites. To test the effectiveness of these strategies, A/B split testing can be used to identify whether they increase visitor conversion to sales. Careful design of the test allows a company to minimise any potential costs and disruptions as well as better understand the demographics of their customer base.
read moreThe Big Bang South West is an annual science fair aimed at inspiring young scientists. Students can exhibit science projects which are judged throughout the day. By using a formal design, projects can be allocated to judges that meet any organisational constraints as well as ensuring that each project is given a fair score.
read moreTo test the effectiveness of a new device designed to eliminate smoke in the surgical field, an experiment was designed that collected information on the clarity of view during the surgery. By analysing these data it was possible to detect a positive effect of the new device and compare the effectiveness relative to alternative methods.
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