Useful tips for everyday
Is it bad if error bars overlap? A common myth is that when error bars for two samples do not overlap, the difference is statistically…
What is the relationship between Y and X? The relationship between x and y is called a linear relationship because the points so plotted all…
What is the difference between orthogonal and independent? In higher dimensions, “perpendicular” is superseded with the term “orthogonal.” A group of vectors is independent if…
What is a masking variable? When you are creating and editing a variable that has sensitive data for its value, you are able to mask…
How do I add data to a table in R? Adding Single Observation / Row To R Data Frame Create a new Data Frame of…
Can you use z-score for non normal data? Non-normal distributions can also be transformed into sets of Z-scores. In this case the standard normal table…
How accurate is naive Bayes? 5 is 81.91%, for Naive-Bayes it is 81.69%, and for NBTree it is 84.47%. Absolute differences do not tell the…
Is AB testing a RCT? Also known as A/B tests or split-tests, rapid-fire tests (RFTs) are nimble randomized controlled trials (RCTs) specifically aimed at improving…
How do you calculate data bias? To calculate the bias of a method used for many estimates, find the errors by subtracting each estimate from…
Are CDFs unique? The cdf of any kind of random variable X is defined as FX(x) = P [X ≤ x]. Note that even though…