Useful tips for everyday
Is uniform random variable continuous? The Uniform distribution is the simplest probability distribution, but it plays an important role in statistics since it is very…
How do you perform feature selection with numerical input data? # example of mutual information feature selection for numerical input data. from pandas import read_csv.…
When can we use Durbin Watson? In statistics, the Durbin–Watson statistic is a test statistic used to detect the presence of autocorrelation at lag 1…
How to generate a random dataset in Python? In this article, we will generate random datasets using the Numpy library in Python. In probability theory,…
Do we need to normalize data for ridge regression? When using ridge regression, it becomes important to make sure that your data is normalized: in…
What best defines a conditional probability? Conditional probability is defined as the likelihood of an event or outcome occurring, based on the occurrence of a…
What is classification in KNN algorithm? KNN has been used in statistical estimation and pattern recognition already in the beginning of 1970’s as a non-parametric…
What is multivariate Cox model? The Cox (proportional hazards or PH) model (Cox, 1972) is the most commonly used multivariate approach for analysing survival time…
Do sample sizes have to be equal? A sample size imbalance isn’t a tell-tale sign of a poor study. You don’t need equal-sized groups to…
What is the null hypothesis for kappa statistic? The null hypothesis, H 0, is kappa = 0. The alternative hypothesis, H 1, is kappa >…