Math Mod Unit 4 Quiz 2

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The researcher's opinions are __________ in a presentation.

not included

Giving a(n) __________ would be a good choice for a presentation at a meeting.

oral report

The choice of presentation method is partly based on the __________ of the presentation.

purpose

Did we employ _____ sampling methods?

random

How much did the five 9th-grade students who chose pizza spend in all?

$310

How much did all eight 9th-grade students spend in all?

$364

What was the average amount spent by these 14 students?

$46.57

What was the average amount spent by 10th-grade students?

$48

How much did the three 9th-grade students who chose fruit spend in all?

$54

What was the average amount spent by 9th-grade students?

NOT $80

Note: The researcher reported that he administered the survey to 9th- and 10th-grade friends of his that he was able to contact by telephone on a Saturday afternoon. Was this a random sampling method? Why or why not?

No; The researcher only surveyed those friends who were available by phone on Saturday.

Note: The researcher reported that he administered the survey to 9th- and 10th-grade friends of his that he was able to contact by telephone on a Saturday afternoon. Was the survey biased? Why or why not?

Yes; The researcher only surveyed his friends.

Charts and graphs are ______ in a written report.

necessary

If a visual display is chosen to present research, a bibliography is ________.

necessary

When giving an oral report, a bibliography is __________.

necessary

Why did we choose our method of _____?

data collection

What was the _____ of our data collection?

focus

Were our survey questions _____?

unbiased

A(n) __________ would be a good choice for a bulletin board in a public building.

visual display


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