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March 31, 2015

March 31, 2015

Posted by **Happyface** on Tuesday, September 2, 2008 at 5:33pm.

Bisons 17

Cougars 4

Huskies 18

Knights 32

Other 3

a. About how many students would vote for the Huskies if the entire student body of 1600 voted? About how many would vote for the Knights?

b. Suppose the students surveyed were in the spanish club. Do you think the results of the survey would fairly represent the student body? (Can you please explain to me how you get the answer.)

c. How could you survey a part of the student population that would fairly represent all students? (I need 2 examples please.)

Thank you.

- Math -
**Ms. Sue**, Tuesday, September 2, 2008 at 5:42pmIf I understand your problem, only 74 students voted.

Bisons:

17/74 = about 23%

23% of 1600 = 368

a. You can follow the pattern above to answers these questions.

b. Undoubtedly only a very small percentage of the student body belongs to the Spanish club. These people are interested in Spanish language and culture and do not fairly represent the students in this school.

c. One way to accurately survey the student population would be to take an alphabetical list and survey each 20th person.

What is another way you could do this?

We'll be glad to check your answers.

- Math -
**Happyface**, Tuesday, September 2, 2008 at 5:58pma. Huskies: 18/74=about 24%

24% of 1600=384

Knights: 32/74=about 43%

43% of 1600=688

So far am I correct?

- Math -
- Math -
**Ms. Sue**, Tuesday, September 2, 2008 at 6:04pmYes. You are right. :-)

- Math -
**Happyface**, Tuesday, September 2, 2008 at 6:29pmIs drawing students names out of a hat a good example?

Which type of sample is it?

Simple random sample

Systematic random sample Voluntary response sample

Convenience sample

Or Stratified random sample.

Thank you.

- Math -
**Ms. Sue**, Tuesday, September 2, 2008 at 6:40pmDrawing student names from a hat is another good example.

Isn't that a simple random sample?

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