Thursday, February 22, 2024

How to Smooth Data by Using the TREND Function

Years ago, I read that Prof. William S. Cleveland had suggested that data could be smoothed by calculating a centered trendline through adjacent data—a...
I used the FILTER function to give me IFS-like power for PERCENTILE.INC. But then I realized the same pattern brings IFS-like power to many functions—including MEDIAN, STDEV.S, GEOMEAN, and perhaps even the FORECAST functions!

Using the Hidden Power of Excel’s FILTER Function

When you take the time to explore a new worksheet function, it's amazing what you can discover! And I won't tell you about the really...
This Excel table shows the top and bottom five results, with charts that show the most recent three month trends. And it updates automatically.

Show Top and Bottom Results in a Chart-Table

The workbook that supports the following figure does a lot of work! First, it uses Power Query to download the weekly unemployment claims and the...
How to calculate and highlight the standard error of the estimate on each side of the trend in an Excel chart to make exceptional results stand out.

Highlight Normal Results in Line Charts to Make Exceptional Results Stand Out

Line charts that show trends in performance are the most useful type of chart that management reports can contain. All managers want good performance to...
You can use probability distributions to manage the uncertainty about your assumptions when you create simulations in Excel. Here's how.

How to Return Random Numbers from a Normal Distribution for Your Excel Forecasts

(This is the first of two articles about normal distributions. The second article is, How to Create Monte Carlo Models and Forecasts Using Excel Data...
Excel provides several worksheet functions for working with normal distributions or 'bell-shaped curves.' This introduction to Excel's Normal Distribution functions offers help for the statistically challenged.

An Introduction to Excel’s Normal Distribution Functions

(Download the workbook.) When a visitor asked me how to generate a random number from a Normal distribution she set me to thinking about doing statistics...
Using Excel 2007 and above, you can create shaded areas in charts to specify areas of special interest. Here's how to do this using normal curves.

How to Create Normal Curves With Shaded Areas in Excel

Adding shaded areas to normal curves like this is a challenging task in Excel charting. But once you know how, it's not difficult to...

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Excel Flowbook Revolution

Getting Radical with Excel

It's time to think about Excel in a radical new way—when we use it to work with business or economic data. It's time, in fact,...
Growing too fast can be dangerous to your company's health. Use the Sustainable Growth Rate ratio to track your company's financial ability to grow.

How Fast Is Too Fast?

(Originally published in Inc Magazine.) What typically tops the list of worries of the chief executive officers of fast growing companies? Financing that growth, according...