Hi,
I have a dataset that has a unique ID and 10 sources in which they come from, it looks like:
ID Source
1 A
2 B
3 C
4 D
5 D
6 C
etc.
What i'd like to do is create a new table selecting at Random a fixed number of observations from each source, for example my criteria may look like:
Source Random_Selection_count
A 500
B 300
C 250
D 100
etc.
I figure I can run the proc sql selection for each of the 10 sources then appending them together, but I am wondering if there is a simplier way?
Thanks in advance for your help.
SURVEYSELECT.
SURVEYSELECT.
amazing, thank you very much.
You may not want OUTALL. SELECTALL selects the entire strata when _NSIZE_ is bigger than the number of obs. use REPS options if you want more than one sample and you probably want to specify the SEED.
Hi,
I'm revisiting this test, with a additional layer of complexity that i'm unsure about how to proceed.
I have a testing grid that look's like:
Group | Z | A | B | C | D | E | F | G | H | I | J | Total per Group |
Group 1 | 24,100 | 991 | 991 | 991 | 1,011 | 28,084 | ||||||
Group 2 | 24,099 | 991 | 991 | 991 | 1,010 | 1,295 | 1,322 | 1,322 | 1,321 | 1,321 | 1,322 | 35,985 |
Group 3 | 24,100 | 991 | 991 | 991 | 1,011 | 1,295 | 1,321 | 1,321 | 1,322 | 1,321 | 1,321 | 35,985 |
Group 4 | 24,100 | 991 | 991 | 991 | 1,011 | 1,295 | 1,322 | 1,321 | 1,321 | 1,322 | 1,321 | 35,986 |
Total | 96,399 | 3,964 | 3,964 | 3,964 | 4,043 | 3,885 | 3,965 | 3,964 | 3,964 | 3,964 | 3,964 | 136,040 |
Where I have 4 Groups comprised of a sample from the following Sources (A-Z).
I'm not sure how I can assign a random sample for each group across the different Sources.
Your help greatly appreciated, thank you.
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