# stats6 - For my first sample of data I chose to use the...

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For my first sample of data I chose to use the stratified sampling. I broke the numbers down into groups to see which numbers were on there more than once. So the groups would be once, twice, three times and so on. I chose ten numbers that were in the group “twice”: 48,48, 58,58,60,60,74,74,80,80. The mean came out to be 64 and the standard deviation was 12.1. Non-probability sampling: Convenience sampling: Pro: It’s easy to use, say you were taking surveys you would just walk up to the first people you saw until you reached your limit. Con: You wouldn’t be able to see if these people represented the average population. What if the survey you were doing was on a restaurant and the ten people that you first came to hated it. That wouldn’t be for the whole population. Judgment sampling: Pro: You would be using people who knew about the info you were sampling most commonly experts. Con: What if the so-called experts were not really experts you could get a lot of false

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## This note was uploaded on 02/25/2011 for the course STATISTICS WL110 taught by Professor Talton during the Winter '11 term at National American.

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stats6 - For my first sample of data I chose to use the...

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