The R-squared (or r2) is a measure that represents how much variation of a dependent variable is explained by the independent variable. The higher the value of r-squared, the more of one variable’s variance is explained by the variance of another. In this tutorial, you’ll learn how to use Excel to calculate the r-squared value. …
The mean squared error is frequently used to measure the accuracy of the prediction of a dataset. In this tutorial, you’ll learn how to calculate the mean squared error in Excel. First, you’ll learn how the MSE is calculated and what it represents. Then, you’ll learn how to calculate the mean squared error using Excel. By …
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By the end of this tutorial, you’ll have learned: What a z-score is and why it matters How to calculate the z-score in Excel for a single value How to calculate the z-score in Excel for an entire column How to interpret z-scores in Excel What are Z-Scores and Why Do They Matter? A z-score …
The standard deviation is a measure of variation in a dataset. It tells you how similar or dissimilar your data is. In this tutorial, you’ll learn how to use Excel to calculate the standard deviation. Thankfully, Excel makes calculating the standard deviation very simple and straightforward. However, there are a number of different functions available …
A very common task you’ll encounter when working with large datasets is checking whether or not a value exists in a range or list of values. For example, you may want to see if a particular staff person checked in or whether an item was sold. In this tutorial, you’ll learn how to use Excel …
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The interquartile range, or IQR, represents the spread of the middle 50% of the dataset. In particular, the interquartile range represents the difference between the first quartile and the third quartile. In this tutorial, you’ll learn how to use Excel to calculate the interquartile range. Excel makes this easy by using the QUARTILE() function, which …
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The Excel #NUM! error occurs when an Excel formula can’t perform a calculation. It may not be immediately clear, however, why Excel can’t perform a calculation. In this tutorial, you’ll learn how to identify and resolve the main causes of the Excel #NUM! error. There are three main causes of the Excel #NUM! error, including …
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Being able to work with text in Excel is an incredibly valuable skill. Because text data is often messy, you’ll likely find yourself wanting to strip or remove the first or last characters from a cell in Excel. In this tutorial, you’ll learn how to use Excel to remove characters from both the left and …
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The Excel #DIV/0 error occurs when a value is divided by 0. Because dividing a number by zero returns an infinity value, Excel shows you an error. Excel provides you with a number of helpful ways to resolve this error. In this tutorial, you’ll learn how to resolve the Excel #DIV/0 error. Similarly, trying to …
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Calculating a square root of a number is a common task that you’ll encounter when working in Excel. Thankfully, Excel makes it very easy to do! In this tutorial, you’ll learn how to use Excel to calculate a square root of a value or of an entire column. Because of how often taking the square …
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