Random sampling

Kaylyn

New Member
Joined
Sep 6, 2018
Messages
3
I have a worksheet that has column A (state) and column B (individual ID #). I need to review 100% of AZ, FL, IA, TX. But only a random 15% for every other state (i.e. 15% of HI, 15% of NY, 15% of TN, not an overall 15% if the remaining states). Can someone help me to write a formula for this?
 

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Hi Kaylyn,
how many occurances of each state do you have? And if you have e.g. 2 HI, is it okay that none (15% of 2 rounded down) are selected?
If so, you could e.g. do:
=IF(OR(B14="AZ",B14="FL"),"REVIEW",IF(RAND()<=0,15,"REVIEW","NO REVIEW"))
This formula gives AZ and FL a 100% check chance, and a line from any other state has a 15% chance of REVIEW.
Hope this helps,
Koen
 
Last edited:
Upvote 0
This will sample the required number of times:

[Table="width:, class:grid"][tr][td="bgcolor:#C0C0C0"][/td][td="bgcolor:#C0C0C0"]
A​
[/td][td="bgcolor:#C0C0C0"]
B​
[/td][td="bgcolor:#C0C0C0"]
C​
[/td][td="bgcolor:#C0C0C0"]
D​
[/td][td="bgcolor:#C0C0C0"]
E​
[/td][/tr][tr][td="bgcolor:#C0C0C0"]
1​
[/td][td="bgcolor:#F3F3F3"]
State
[/td][td="bgcolor:#F3F3F3"]
Pct
[/td][td="bgcolor:#F3F3F3"]
Num
[/td][td="bgcolor:#F3F3F3"]
Check
[/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
2​
[/td][td]AK[/td][td]
15%​
[/td][td="bgcolor:#FFFF99"]
1​
[/td][td="bgcolor:#CCFFFF"]
OK​
[/td][td="bgcolor:#FFFF99"]C2: =CEILING(B2 * COUNTIF($A$9:$A$58,A2), 1)[/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
3​
[/td][td]AL[/td][td]
15%​
[/td][td="bgcolor:#FFFF99"]
2​
[/td][td="bgcolor:#CCFFFF"]
OK​
[/td][td="bgcolor:#CCFFFF"]D3: =IF(COUNTIFS($A$9:$A$58, A3, $C$9:$C$58, "x") = C3, "OK", "oops")[/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
4​
[/td][td]AR[/td][td]
15%​
[/td][td="bgcolor:#FFFF99"]
2​
[/td][td="bgcolor:#CCFFFF"]
OK​
[/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
5​
[/td][td]AZ[/td][td]
100%​
[/td][td="bgcolor:#FFFF99"]
19​
[/td][td="bgcolor:#CCFFFF"]
OK​
[/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
6​
[/td][td]CA[/td][td]
15%​
[/td][td="bgcolor:#FFFF99"]
2​
[/td][td="bgcolor:#CCFFFF"]
OK​
[/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
7​
[/td][td][/td][td][/td][td][/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
8​
[/td][td="bgcolor:#F3F3F3"]
State
[/td][td="bgcolor:#F3F3F3"]
EIN
[/td][td="bgcolor:#F3F3F3"]
Audit
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
9​
[/td][td]AZ[/td][td]
24-3836833​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td="bgcolor:#CCFFCC"]C9: =IF(RAND() < (VLOOKUP(A9, $A$2:$C$6, 3) - COUNTIFS(A$8:A8, A9, C$8:C8, "x")) / COUNTIF(A9:A$58, A9), "x", "")[/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
10​
[/td][td]AL[/td][td]
38-7301056​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
11​
[/td][td]AR[/td][td]
23-0762875​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
12​
[/td][td]AR[/td][td]
99-8190134​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
13​
[/td][td]AZ[/td][td]
44-3676940​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
14​
[/td][td]AR[/td][td]
55-2551530​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
15​
[/td][td]AL[/td][td]
78-9182025​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
16​
[/td][td]AL[/td][td]
56-4213949​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
17​
[/td][td]AZ[/td][td]
25-6162809​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
18​
[/td][td]AR[/td][td]
10-3487162​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
19​
[/td][td]AR[/td][td]
52-3370061​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
20​
[/td][td]AZ[/td][td]
69-0299513​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
21​
[/td][td]AL[/td][td]
95-0798353​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
22​
[/td][td]AR[/td][td]
81-0659603​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
23​
[/td][td]CA[/td][td]
66-3044196​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
24​
[/td][td]CA[/td][td]
11-6877591​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
25​
[/td][td]AK[/td][td]
18-7319437​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
26​
[/td][td]AL[/td][td]
38-9253896​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
27​
[/td][td]AZ[/td][td]
83-8356633​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
28​
[/td][td]AL[/td][td]
76-3343687​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
29​
[/td][td]CA[/td][td]
55-4004620​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
30​
[/td][td]AL[/td][td]
14-9186665​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
31​
[/td][td]AL[/td][td]
73-4323453​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
32​
[/td][td]AK[/td][td]
71-4814791​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
33​
[/td][td]AL[/td][td]
81-7825259​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
34​
[/td][td]AZ[/td][td]
17-8178045​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
35​
[/td][td]AZ[/td][td]
44-7218591​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
36​
[/td][td]AZ[/td][td]
72-6227715​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
37​
[/td][td]AZ[/td][td]
43-9338041​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
38​
[/td][td]AZ[/td][td]
96-4157370​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
39​
[/td][td]AZ[/td][td]
46-4727208​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
40​
[/td][td]CA[/td][td]
43-2886907​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
41​
[/td][td]CA[/td][td]
22-0883195​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
42​
[/td][td]AL[/td][td]
64-5727136​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
43​
[/td][td]AZ[/td][td]
53-8839382​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
44​
[/td][td]AZ[/td][td]
69-9737976​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
45​
[/td][td]AK[/td][td]
48-4682310​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
46​
[/td][td]AR[/td][td]
25-8637016​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
47​
[/td][td]AZ[/td][td]
32-8042972​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
48​
[/td][td]CA[/td][td]
77-8854177​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
49​
[/td][td]AR[/td][td]
52-3090127​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
50​
[/td][td]AL[/td][td]
43-3024264​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
51​
[/td][td]AZ[/td][td]
56-4864344​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
52​
[/td][td]CA[/td][td]
36-0689672​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
53​
[/td][td]AZ[/td][td]
39-2147180​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
54​
[/td][td]AZ[/td][td]
54-5354252​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
55​
[/td][td]AR[/td][td]
32-2343370​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
56​
[/td][td]AK[/td][td]
82-4803409​
[/td][td="bgcolor:#CCFFCC"]
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
57​
[/td][td]AZ[/td][td]
40-3612562​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[tr][td="bgcolor:#C0C0C0"]
58​
[/td][td]AZ[/td][td]
19-4173068​
[/td][td="bgcolor:#CCFFCC"]
x​
[/td][td][/td][td][/td][/tr]
[/table]


The state abbreviations in A2:A6 (extended as necessary) must be sorted.
 
Upvote 0
Thank you for the reply Rijn. There needs to one minimum for each state that appears on the sampling. So anything less than 2 would need to have 1 audit completed
 
Upvote 0

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