Have you ever heard of Data Sufficiency on the GMAT? It’s a specific type of question commonly used in consulting recruitment processes...

Are you thinking about a career in consulting or pursuing an MBA in the U.S.? These two paths have something important in common: the...

Among the many sophisticated statistical methods we can use today, amplified by the availability of data and processing power, there is one relatively simple technique that should not be overlooked: the 'good and old' linear regression . I must admit, when I first applied regressions at work (almost 20 years ago...), I didn’t fully understand all the different concepts. But I did hear some "absolute truths" from someone: R² must be greater than 80% You need more than 80 data