Wieghted average

rsoper

New Member
Joined
Mar 31, 2002
Messages
23
Sorry by re-posting twice, I was not sure how to add additonal inforamtion to my first cry for help.

I have included the text from first request and added addtional text..

I have a table that calculates on time delivery.

Values are:
Items delivered Items delivered on time OTD
A B =1-(A-B)/B
There are many items in this file.
.
.
I am interested in creating a value for weighted average, where a row with more items delivered would have a higher impact on the total weighted average than items with less delivered.
.
.
I am struggling on the formula, please help.
To give more information.

Example
Items Items
Ordered On-time" Formula
1364 1223 89.66%
937 800 85.38%
879 777 88.40%
703 669 95.16%
28 9 32.14%
18 5 27.78%
1 0 0.00%
13 0 0.00%
Total Item
3943 3483 52.32% Average

As I stated the Formula is = 1 - (A-B)/A

This value gives "on-time" %. But look at the numbers when averaging the formula column. 52.32% is the correct average, but it is being skewed by the last 4 items with low %'s. I want to make a value that considers the fact that the first 4 items had many more items thus should have a higher weighting making the weighted average closer to 80% area.
"weighted average".

Thanks for your help.
 

Excel Facts

Test for Multiple Conditions in IF?
Use AND(test, test, test, test) or OR(test, test, test, ...) as the logical_test argument of IF.

Forum statistics

Threads
1,148,229
Messages
5,745,483
Members
423,953
Latest member
MrC54

We've detected that you are using an adblocker.

We have a great community of people providing Excel help here, but the hosting costs are enormous. You can help keep this site running by allowing ads on MrExcel.com.
Allow Ads at MrExcel

Which adblocker are you using?

Disable AdBlock

Follow these easy steps to disable AdBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the icon in the browser’s toolbar.
2)Click on the "Pause on this site" option.
Go back

Disable AdBlock Plus

Follow these easy steps to disable AdBlock Plus

1)Click on the icon in the browser’s toolbar.
2)Click on the toggle to disable it for "mrexcel.com".
Go back

Disable uBlock Origin

Follow these easy steps to disable uBlock Origin

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back

Disable uBlock

Follow these easy steps to disable uBlock

1)Click on the icon in the browser’s toolbar.
2)Click on the "Power" button.
3)Click on the "Refresh" button.
Go back
Top