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 ...

Numbers by themselves seldom convey the big picture. Excel Charts makes it easy to illustrate trends in your business, from past expenses and profit to sales forecasts based on previous sales. T*o* ...

These obscure charts might be the key to visualizing your data.

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 ...