The first part is simple:
Just sort the values. This puts "close" values "near" to each other:
10
12
15
17
20
23
then in B1 enter:
=A2-A1 and copy down thru B5:
10 2
12 3
15 2
17 3
20 3
23
Then use MIN() on column B to find the minimum and then find all instances
of that minimum.

Signature
Gary's Student
gsnu200705
> Referring to the post in General Question
>
[quoted text clipped - 13 lines]
> Thank you in advance
> Eric Choi
Sort your data (A1:A6) in Ascending order
Leave B1: (blank)
In B2: =A2-A1
Drag Fill Handle to coppy from B2 to B6
In C1:
=MEDIAN(INDEX(A1:A6,MATCH(MIN(B1:B6),B1:B6,0)),OFFSET(INDEX(A1:A6,MATCH(MIN(B1:B6),B1:B6,0)),-1,0))
> Referring to the post in General Question
>
[quoted text clipped - 13 lines]
> Thank you in advance
> Eric Choi
T. Valko - 14 Feb 2007 00:14 GMT
No need for Offset:
=MEDIAN(INDEX(A1:A6,MATCH(MIN(B1:B6),B1:B6,0)),INDEX(A1:A6,MATCH(MIN(B1:B6),B1:B6,0)-1))
But, if really want to use Offset:
=MEDIAN(OFFSET(A1,MATCH(MIN(B1:B6),B1:B6,0)-2,,2))
Biff
> Sort your data (A1:A6) in Ascending order
>
[quoted text clipped - 27 lines]
>> Thank you in advance
>> Eric Choi