# Excel tips: formulas

These videos come from our accelerated video training.

In this video, we show examples of the 8 Excel formula errors you're likely to run into, and simple steps you can take to fix them. We look at #NAME?, #DIV/0!, #NUM!, #NULL!, #NA, #...

In this video, we look at how to build a chart that automatically includes new data, and dynamically highlights the top and bottom values. This is an easy way to create an interactive chart...

In this video, we'll look at how you can use the CHOOSE function for simple lookups. The CHOOSE function doesn't need an external table, and can sometimes replace more complicated...

In this video, we'll look at a few ways to generate random values with the RANDBETWEEN function. You can use this approach to generate random numbers, random prices, random dates, and...

This video show how to calculate due dates with the WORKDAY and WORKDAY.INTL functions. You can use WORKDAY to calculate intelligent ship dates, delivery dates, and completion dates that...

In this video, we demo how to plot results from a survey question in an Excel bar chart. Along the way, we use the COUNTIF function to build a summary table, and show a simple technique for...

In this video, we'll look at how to use conditional formatting to shade alternating groups of rows. For example, you can use this approach to shade groups of 3 rows, groups of 4 rows,...

In this video we show how to highlight approximate match lookups with conditional formatting and the LOOKUP function. Highlighting approximate matches is tricky, because you must replicate...

In this video, we'll look at how to build a two-way lookup with INDEX and MATCH, using approximate matching. This is a classic solution for non-exact lookups like income tax, shipping...

In this video, we show you how to use conditional formatting to highlight rows and columns associated with exact match lookups. This is a sleek, interactive way to show users matching...

In this video, we simplify two formulas, by replacing several IF function with MIN function and boolean logic. This is a great trick to make annoyingly complex formulas easier to read and...

In this video, we build two formulas to calculate the company match for a 401k contribution. This is a great example of building a complex formula with several nested IFs in small steps.

In this video, we introduce the concepts of boolean values and boolean logic. Boolean logic can be a great way to simplify and speed up complex formulas, since it requires no branching.

VLOOKUP is a great way to merge data in two tables based on a common ID. This video shows you how in 3 minutes. You can even use this technique to reorder the columns you retrieve.

Although Pivot Tables are fantastic tools for summarizing data, sometimes you just want a simple, lightweight solution based on formulas. The good news is you can build your own summaries...