Where \(X\) is a normally distributed random variable with mean \(\mu\) and standard deviation \(\sigma\). The peak of the curve occurs at \(x=\mu\), and the spread ...

Microsoft Excel’s mathematical capabilities often go far beyond the needs of most everyday users. However, Excel’s built-in statistical functions make it an ...

What do these numbers mean, what’s the target, and how can they provide insight into better diabetes management? Example days included! Glucose monitoring is one of the most important tools in ...

Volatility is troublesome for many investors. Value changes in your stocks, your portfolio, or an index can keep you up at night -- or worse, push you to make emotional decisions you later regret.

Abstract: Aiming at the loss of color information within existing curve matching methods, which happens on transformation from an RGB color image into gray space and results in mismatches, we present ...

If you are working with a large dataset, knowing its standard deviation is handy as it will let you know the variability in the given dataset. You get to see the ...

Microsoft Excel is useful for countless purposes, but one of its handiest features is its ability to perform calculations and other mathematical functions. This includes calculating the mean average ...

In response to my article, Is the Stock Market Too Concentrated?, which relied upon standard-deviation calculations to assess investment risk, a reader wrote: “My problem [with your argument] is ...

Are you wondering how to calculate z-score in Excel? If so, you’ve landed on the right page. In statistics, a z-score tells us how far a data point is from the mean. While Excel still doesn't have an ...