Simply collecting data is not enough. You can fill spreadsheets with data, but it's useless if you can't act on it. Regression is one of the most powerful statistical tools for finding relationships ...

Trend lines are a type of regression analysis, which is a way to study the relationships between variables. In the context of small business, trend lines are often used to show sales trends and can be ...

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 ...

When you're working with a spreadsheet, duplicate data can sometimes make its way in and cause all sorts of problems. In this how-to, we demonstrate two methods of using Microsoft Excel for ...

Variance is a useful analytical tool when it comes to measuring data, and helps you to calculate the range of numbers in a set of data. This is handy for a multitude of reasons, from calculating ...

Q. I am trying to create a formula in our accounting system, but I keep getting errors. What can I do to get the formula to work? A. All Excel users know how powerful formulas are, but sometimes it ...

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 ...

If you’ve been combining multiple data sources, you can quickly end up with duplicate rows or cells in Excel. Whether it’s due to an accidental copy and paste or a typing error, this can be ...

It can be beneficial in many situations to display the difference between two numbers as a percentage. Doing so helps to put a change into a more understandable format for the average reader. In this ...

Regression analysis is a statistical technique used to estimate the relationship between two or more variables. In Excel, you can perform this analysis using the built-in Data Analysis ToolPak. This ...