ShmoopTube

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Thank you We sneak and here's your shmoop too sure

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brought to you by random samples We'd prefer to choose

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ours but we're not ones to turn down free food

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Always been a taste wishbone right in what sort of

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pole must every member within the universe have an equal

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probability of being surveyed and hear the potential answers Right

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Okay well when it comes to pulling the more people

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we survey the more likely the opinions of the group

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will match the opinions of the universe as a whole

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Try that one on for equally representational size Goldie locks

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Alright what all individuals have an equal probability of being

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surveyed in be an exit poll Well exit polls are

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conducted after we've voted so we'd only be capturing individuals

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participating in their civic duty that gives us access to

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only the brightest stars in the red white and blue

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Would we obtain an equally representative sample in c A

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tracking poll Well tracking polls are designed to monitor change

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over time like for a presidential approval rating And while

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those surveyed might be random it's not absolutely required though

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the chances for cr well trending negative can we get

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a perfectly random distribution indy an opt in poll Well

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equally representative poles need to ensure that everyone has a

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well equal chance of being surveyed Opt in polls however

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have a built in barrier as the on ly people

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answering choose to participate What about e A quota sample

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poll will quote a sample Polls target very specific groups

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of people like red heads or people who own flying

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squirrels as pets So there's no way in the well

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universe that we'd obtained a perfectly random sample Hey rocky

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watch me pull a rabbit out of the head Flying

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squirrel bullwinkle remember him which means that all individuals would

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have an equal probability of being surveyed in a a

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random sample poll when we want to pull that accurately

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captures how the entire population feels about a certain political

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issue like access to healthcare A random sample poll is

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the way to go Random samples are designed to be

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representative of the entire group were trying to learn about

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and give all individuals in the population a supposedly equal

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chance of being surveyed The option is the correct answer

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If we don't have a random sample our data might

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be compromised in some way which means we'd have to

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start all over So let's Stick with the random sample 00:02:18.95 --> [endTime] It'd really biased sometime in the long run

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