Drill-down visualizations can be a good way to present a lot of data in a digestible format. In this example, we’ll create a graph of median home values by U.S. state using R and the highcharter ...

If you understand the definition of a mathematical function, a good way to judge it is that any line drawn parallel to the y-axis intersects with the values in the function’s curve only once. The same ...

A mathematical function is a formula that takes an input, x, applies a set of calculations to it, and produces an output called y. By calculating a function at a large number of set intervals, it is ...

To calculate the Consumer Price Index between two years in Excel, take a sum of all the amounts spent on the basket of products over those two years. Then use the following formula to find the CPI ...

If you track your daily earnings using an Excel spreadsheet, you can use the same spreadsheet to estimate your projected earnings over any time period. Using Excel's "AVERAGE" function, you can ...