Benford’s Law was published in 1938, but over 80 years later, events over the past year have resurfaced discussions of Benford’s Law. What is the law? What are its applications? Benford’s Law is a mathematical formula that calculates the probability of occurrence of the non-zero leading digits in data sets that span several orders of [...]
Machine learning is mentioned frequently in the media. How is it different from classical statistics? How is it similar? We found it best to learn about this from Brian Caffo, a Ph.D. in statistics who also has expertise in computing algorithms. Brian is a professor of biostatistics at John Hopkins University. Brian uses both machine [...]
You may have heard of A/B Testing and Multivariable Testing (Experimental Design) in terms of website optimization to maximize conversions among other goals. What are these testing regimens? When should you use them? A/B testing is just that — testing one configured webpage (A) against another (B) and analyzing which is best. Multivariate testing (MVT) [...]
If you are in Quality, Lean, or Six Sigma, you will write procedures. How can you check that your documents are written at a maximum grade level to ensure that everyone can comprehend them as intended? The answer is readability statistics. What are readability statistics? They are formulas that rate your documents and give a [...]
In this blog, we will see how statistical tolerance intervals can be applied to infer the proportion of individual products within a population. We take a representative sample from a population, compute sample statistics, and make an inference about a population parameter. The most familiar sample statistic is the sample mean. That is used to [...]
