24 Jun 2022
Robotic Process Automation (RPA) is one of the newer concepts for making our business and personal life easier. And this...
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20 Mar 2022
When I started dealing with data analytics, the focus was on learning the “sexy” statistics to help drawing business-relevant conclusions...
20 Feb 2021
Data analysts have not only the job to turn organisational data into information. They also need to master analytical storytelling....
27 Jun 2020
Great, We Have Improved … or Not? About Sampling and Confidence Intervals Many companies spend considerable amounts of money on...
28 Jan 2020
Many companies spend considerable amounts of money on customer and employee surveys every year. The survey results are used to...
9 Jan 2019
At MyInsurance, survey results have been collected in 2017, 2018 and 2019. The rating was done on a 10-point Likert...
3 Apr 2018
The Chi-Squared test is used to check whether there is a significant difference between observed frequencies (discrete data) and expected...
17 Mar 2018
Survey data should be analysed with different tools at the same time in order to find the most appropriate method...
3 Mar 2018
Consider a production process that produced 10,000 widgets in January and experienced a total of 112 rejected widgets after a...
22 Jan 2018
Linear regression is one of the most commonly used hypothesis tests in Lean Six Sigma work. Linear regression offers the...
28 Dec 2017
ANOVA (analysis of variances) is a statistical technique for determining the existence of differences among several population means. The technique...
2 Dec 2017
In some situations, Six Sigma practitioners find a Y that is discrete and Xs that are continuous. How can a regression equation be...
30 Nov 2017
More often than not, Lean Six Sigma practitioners have to find out whether two groups that look quite the same...
2 Nov 2017
Measurement error is unavoidable. There will always be some measurement variation due to the measurement system itself. Most problematic measurement...
8 Mar 2010
Rejecting a null hypothesis when it is false is what every good hypothesis test should do. The “power of the...
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