how do i identify the a sample and a population

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in a data or a word problem for example .... Paul reports that one out of every five boys on the boys’ varsity basketball team can dunk a basketball after he conducts a survey of the boys on the team.

Apr 1st, 2015

This example is a POPULATION sample because Paul conducted a survey of ALL the boys on the team.

Apr 1st, 2015

yes but how do i identify it sir

Apr 1st, 2015

If someone conducts a survey of a group of people among a larger population then it would be a SAMPLE.

But if the survey includes EVERYONE in the population then it's a population.

For instance, if I want to know the approximate percentage of people who smoke in my town of 500,000 people, it would be really hard to knock on every door and ask if they smoke. Instead, I would take a random sample of maybe 100 households and make a survey of them because they represent typical homes in my town. That would be a SAMPLE.

Does that make more sense?


Apr 1st, 2015

wait so for ....After examining eight cartons of eggs at a local supermarket, Sheila concludes that one out of every 12 eggs packaged in the U.S. is cracked. would it be a population and for....Jorge surveys each of the teachers in his school. He concludes that 64% of the teachers in his school enjoy reading as a hobby.a sample

Apr 1st, 2015

Just the reverse. Sheila conducted a SAMPLE survey because she only examined eight cartons in ONE supermarket. The population of egg cartons in the US is MILLIONS.  So she only conducted a small sample.

Jorge, on the other hand, surveyed ALL the teachers in his school. So he conducted a population survey.

Make more sense now?

Apr 1st, 2015

yes so because shelia only conducted her data from a smaller portion of the whole thing its a sample and because jorge conducted his data from all the teachers and his data uses the whole population its a population.

Apr 1st, 2015

You got it !

Apr 1st, 2015

thank u :))

Apr 1st, 2015

You're welcome :)

Apr 1st, 2015

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