How to Find Average of the Last 3 Values in Microsoft Excel 2010

In this article, we will learn How to Find the Average of the Last 3 Values in Microsoft Excel 2010.

Scenario

For Instance, you have a large list of data and you need to find the Average of the numbers from last 3 particular month.

Function and formula

For this article we will be needing the use the following functions:

  1. AVERAGEIFS Function
  2. EOMONTH function

Excel AVERAGEIFS function is used to find the average of the array based on multiple criteria or condition.

Syntax:

= AVERAGEIFS ( Average_range , range1, criteria1, [ range2,criteria2 ] )

The EOMONTH function is used to find the last day of the given month. It requires two things:

  1. From date you wish to count or manufacturing date.
  2. Number of months from the date or its living period.

Syntax:

=EOMONTH( Start_date, months)

start_date : a valid date representing the start date for the function.

Months : a positive or negative number to get the date for after or before the start date.

Now we will make a formula out of these functions. Here we will given the data and we needed to find the AVERAGE of the numbers in a particular month.

Use the formula:

= AVERAGEIFS ( rng , order_date , ">=" & date , order_date , "<=" & EOMONTH ( date , 0 ) )

Explanation:

  • EOMONTH function returns the end of the month date of the date given as argument.
  • AVERAGEIFS takes the average of the numbers between having date greater than given date and less than the end of the month date.

Notes: do not provide date directly to the function. Use DATE function or use cell reference for date argument in excel as Excel reads date only with the correct order.

Example :

All of these might be confusing to understand. Let's understand how to use the function using an example. Here Here we have a data from A1:D51. we need to find the AVERAGE of Quantity in the month of January.

First we will find a date which has the first date of the month which is the A2 cell. Named ranges are rng ( D2 : D51 ) and order_date ( A2 : A51).

Use the Formula:

= AVERAGEIFS ( rng , order_date , ">=" & A2 , order_date , "<=" & EOMONTH ( A2 , 0 ) )

Explanation:

  • EOMONTH (A2, 0) returns the 31st January as the last date in January.
  • ">=" & A2 returns a criteria that the value greater than date in A2.
  • "<=" & EOMONTH ( A2 , 0 ) ) returns a criteria that the value less than the end of the month date.
  • AVERAGEIFS takes all the above arguments and returns the average of the number given below.

{ 33 ; 87 ; 58 ; 82 ; 38 ; 54 ; 149 ; 51 ; 100 ; 28 ; 36 }

Here the A2 is given as cell reference & Named ranges given as rng ( D2 : D51 ) and order_date ( A2 : A51).

As you can see in the above snapshot the AVERAGE of the quantity in January comes out to be 65.091 .

Now we will get the AVERAGE of the quantity in February by changing the First date argument of the function

Use the Formula:

= AVERAGEIFS ( rng , order_date , ">=" & A13 , order_date , "<=" & EOMONTH ( A13 , 0 ) )

As you can see in the above snapshot the AVERAGE of the quantity in January comes out to be 43.778 .

Notes:

  1.  The function returns #VALUE! error if the argument to the function is non-numeric.
  2. Do not provide date directly to the function. Use DATE function or use cell reference for date argument in excel as Excel reads date only with the correct order.

Hope this article about How to Find Average of the Last 3 Values in Microsoft Excel 2010 is explanatory. Find more articles on extracting values and related Excel formulas here. If you liked our blogs, share it with your friends on Facebook. And also you can follow us on Twitter and Facebook. We would love to hear from you, do let us know how we can improve, complement or innovate our work and make it better for you. Write to us at info@exceltip.com.

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Users are saying about us...

  1. It would be good if you explained each formula step by step, eg: what the MATCH is doing & why (including what the meaning of 9.99999999E+307) means), then what INDEX is doing & why, then what AVERAGE is doing in depth so people can actually understand what is happening. 🙂

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