Mathematical foundations of blank filling — Working with missing values is a common task in machine learning. We can say that it’s the very first task to accomplish before starting a pre-processing pipeline. The most common approach to blank filling is to use the mean and the median values. …

A gentle dive into this unusual feature selection technique — Feature selection is always a challenging task for data scientists. Identifying the right set of features is crucial for the success of a model. There are several techniques that make use of the performance that a set of features gives to a model. …

A practical introduction to the Levene test — The Levene test for variance is a statistical test that is used to determine whether or not the variances of two or more groups are equal. This test is often used in experimental design to ensure that the groups being compared are similar in terms of their variability. …

A handy guide to lead magnets for digital businesses — In today’s digital landscape, generating leads is crucial for the growth and success of any business. However, with so much competition and an overwhelming amount of information available online, it can be challenging to capture the attention of potential customers. This is where lead magnets come in. A lead magnet…

A financial portfolio is a collection of assets, such as stocks, bonds, and real estate, that an individual or organization holds for the purpose of achieving financial goals. One of the key decisions that investors face is how frequently to optimize their portfolio. …

Some tips for a social media strategy for startups — Starting a new business can be incredibly exciting, but it can also be quite daunting. One of the biggest challenges that startups face is getting their name out there and building a following. Social media has become one of the most effective ways to do this, but with so many…

As an individual, managing your financial portfolio is crucial for achieving your financial goals and securing your future. But with so many options and so much information out there, it can be overwhelming to know where to start. …

An introduction to the KS test for beginners — Data Scientists often need to assess the proper distribution of their data. We have already seen the Shapiro-Wilk test for normality, but what about non-normal distributions? There’s another test that can help us, which is the Kolmogorov-Smirnov test. The need to check the distribution Data Scientists usually face the problem of checking the distribution of their…

3 easy ways to compare the mean value of a sample with other, expected values — Data scientists and analysts often have to work with mean values and need to compare the mean value of a sample with a known expected value or the mean value of another sample. Statistics helps us with a powerful set of hypothesis tests we can perform for such tasks. The problem Let’s…