4 days agoMember-onlyHow to compare variances of non-normal samplesA 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. …Data Science3 min readData Science3 min read
Jan 19Member-onlyMaximizing Lead Generation with Lead Magnets: A Guide for Digital BusinessesA 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…Startup5 min readStartup5 min read
Published in DataDrivenInvestor·Jan 17Member-onlyPortfolio Optimization FrequencyA 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. In this post, we will explore the…Investing3 min readInvesting3 min read
Jan 17Member-onlySocial media strategy for startupsSome 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…Social4 min readSocial4 min read
Published in DataDrivenInvestor·Jan 14Member-onlyPortfolio managing tips for consumersAs 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. …Finance2 min readFinance2 min read
Published in Towards Data Science·Nov 14, 2022Member-onlyHow is your data distributed? A practical introduction to the Kolmogorov-Smirnov testAn 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…Machine Learning3 min readMachine Learning3 min read
Published in Towards Data Science·Nov 7, 2022Member-onlyA practical introduction to the Shapiro-Wilk test for normalityHow to assess the normality of a dataset in Python — Data scientists usually have to check if data is normally distributed. An example is the normality check on the residuals of linear regression in order to correctly use the F-test. Let’s see how we can check the normality of a dataset. What is normality? Normality means that a particular sample has been generated…Data Science4 min readData Science4 min read
Published in Towards Data Science·Oct 25, 2022Member-only3 easy hypothesis tests for the mean value3 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…Data Science5 min readData Science5 min read
Oct 17, 2022Member-onlyA beginner’s guide to statistical hypothesis testsA simple introduction to hypothesis tests — Statistics is a data scientist’s best friend. Hypothesis tests are a family of very useful tools for any kind of analysis. They can really help us assess the statistical significance of some phenomena. However, we have to master such tools properly in order to benefit from their advantages. What is a hypothesis test? A hypothesis…Statistics4 min readStatistics4 min read
Published in DataDrivenInvestor·Oct 11, 2022Member-onlyAre dividend ETFs worth it?Dividend ETFs are a useful tool for investors. — In this article, the advantages and disadvantages of dividend ETFs are presented. An investor should look for bond-based ETFs in order to have a good dividend yield and avoid the risk related to stocks. …Finance4 min readFinance4 min read