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# Conditional averages calculation

Question asked by ultranix on Nov 12, 2013
Latest reply on Nov 12, 2013 by philmodjunk

### Title

Conditional averages calculation

### Post

Same joined table discussion, same solution of INVOICES and LINES table here at the center stage, different question.

Let's say 1 invoice contains 12 line items (that are stored in lines), Layout is based on Invoices, and portal that is based on lines is placed on layout to add items to the Invoice.

What I want to calculate - average price of each item, but i want to omit/exclude 2 max (highest price) and 2 min (lowest price) items.

So, basically, it would look like this.

1. Item 1 \$20
2. Item 2 \$22
3. Item 3 \$16
4. Item 4 \$35
5. Item 5 \$44
6. Item 6 \$21
7. Item 7 \$24
8. Item 8 \$47
9. Item 9 \$41
10. Item 10 \$27
11. Item 11 \$32
12. Item 12 \$38

So, items #3 and #1 have the lowest prices and must be omitted, same could be said about items #8 and #5, that have highest prices and average of 8 remaining items is 30.