How to Use Microsoft Excel to Calculate Seasonal Indexes. A seasonal index is a way of measuring the seasonal variation -- that is, to measure the change that is due to seasonal changes in demand ...

With the heat of summer upon us, we hear a lot about the heat index in our weather forecasts these days. But what exactly is the heat index and how is it calculated?

Turns out both things are true: it’s called the Heat Index. The heat index is used to calculate not the actual temperature of the air around you, but instead how hot you feel.

How to Calculate Inflation Rate & Base Year. The inflation rate is the rate at which prices for goods and services increase over a period of time. If the cost of goods and services decrease over a ...