Just some weeks ago, I filed my tax in Singapore. It took me about twelve minutes at my computer at home on a Sunday afternoon in April. It was not straight forward, I needed to make some amendments and additional inputs to what IRAS had already prepared for me. Yet, it was really easy to […]
The Chi-Squared test is used to check whether there is a significant difference between observed frequencies (discrete data) and expected frequencies for two or more groups (discrete data). For small sample sizes, Fisher’s Exact test is to be used instead. Both test are performed in a similar way. See for yourself.
Three teams compete in our CHL business simulation. After completing Day One, it looks like the teams show a very different performance. Although the means look very similar, the variation is strikingly different. To test this assumption of different variation among the teams, the Test for Equal Variances is deployed.
To be a good coach is hard work. Coaching requires a set of skills that need to be built. The journey as a coach is a long but rewarding one. How will we know when we have arrived? “With the best of leaders, when the work is done, the project is completed, the people all say, ‘We did it ourselves.’” Lao Tzu
Consider a production process that produced 10,000 widgets in January and experienced a total of 112 rejected widgets after a quality control inspection. A project was deployed to fix this problem. In April, the process produced 8,000 widgets and experienced a total of 63 rejects. Did the process really improve? Read..
Your staff members complain about having too much work, the proportion of people on short-term sick-leave is consistently above average and the turnover rate is disturbingly high. However, comparing takt time and processing time does not show to any obvious issue. So, what is the problem?
If you wish to engage in a fruitful workshop that leads to innovative ideas, you may wish to clarify some basic ground rules for creativity sessions. These ground rules have been adopted from the Creative Problem Solving toolbox by the International Center for Studies in Creativity. And, they have been proven essential through many creativity sessions.
Combining Lean Six Sigma (LSS) with a thorough analysis of your Working Capital Situation can lead to a more objective selection of high impact projects. LSS may help to achieve reduction of Working Capital hidden in warehouses and processes through data-based root cause analysis. Working Capital meets Lean Six Sigma.
HR professionals with knowledge of Lean Six Sigma tools and HR Data Analytics can deliver better service to their customers – their leaders and colleagues. Identifying requirements and gaps, analysing, improving and innovating processes as well as ensuring the performance long-term are valuable business partners.
Linear regression is one of the most commonly used hypothesis tests in Lean Six Sigma work. Linear regression offers the statistics for testing whether two or more sets of continuous data correlate with each other, i.e. whether one drives another one. Additionally, it shows the influence of discrete variables, too.