Where N is the number of the last days / weeks / months/ years to include in the average. =AVERAGE(OFFSET( first cell, COUNT( entire range)- N,0, N,1)) What Excel function is capable of doing this? The good old AVERAGE in combination with OFFSET and COUNT. For this, you need a formula that will recalculate the average as soon as you enter a value for the next month. sale figures or stock quotes, and you want to know the average of the last 3 months at any point of time. Get moving average for a the last N days / weeks / months/ years in a column Remembering that an average is computed by adding up values and then dividing the sum by the number of values to be averaged, you can verify the result by using the SUM formula: You can fix the column with an absolute reference (like $B2) if you want to, but be sure to use relative row references (without the $ sign) so that the formula adjusts properly for other cells. Write a usual AVERAGE formula for the first 3 values and input it in the row corresponding to the 3 rd value from the top (cell C4 in this example), and then copy the formula down to other cells in the column:
Supposing you have a list of average monthly temperatures in column B, and you want to find a moving average for 3 months (as shown in the image above).
Calculate moving average for a certain time periodĪ simple moving average can be calculated in no time with the AVERAGE function. The following examples demonstrate both techniques. Overall, there are two ways to get a simple moving average in Excel - by using formulas and trendline options. In this tutorial, we will be looking into the most commonly used simple moving average.Ĭalculating simple moving average in Excel There exist different types of moving average such as simple (also known as arithmetic), exponential, variable, triangular, and weighted. In business, it's a common practice to calculate a moving average of sales for the last 3 months to determine the recent trend.įor example, the moving average of three-month temperatures can be calculated by taking the average of temperatures from January to March, then the average of temperatures from February to April, then of March to May, and so on. In stock trading, moving average is an indicator that shows the average value of a security over a given period of time. It is frequently used in statistics, seasonally-adjusted economic and weather forecasting to understand underlying trends. Generally speaking, moving average (also referred to as rolling average, running average or moving mean) can be defined as a series of averages for different subsets of the same data set.
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