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| 1 | |
ABC Phone Company wants to survey its clientele to find out what extra services they would like. They decide to phone all their customers in Smallville and ask them to complete a phone survey. Which of the following are the best descriptions of the population and sample in this case? |
| | A) | population: people
sample: customers in Smallville |
| | B) | population: ABC's customers
sample: ABC's Smallville customers |
| | C) | population: ABC's Smallville customers
sample: ABC's customers |
| | D) | population: phone users
sample: ABC's Smallville customers |
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| 2 | |
A municipal government wants to survey its citizens on their
opinions regarding the upcoming annual budget. The city is made up of six districts, each one of which has distinct social and economic characteristics and needs. Which of the following sampling methods is most likely to produce a representative sample? |
| | A) | Systematic sampling. |
| | B) | Voluntary-response sampling. |
| | C) | Simple Random Sampling. |
| | D) | Systematic Random Sampling. |
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| 3 | |
Franco and Johnny work at a factory producing widgets, each of which needs to be manufactured to very strict specifications. The shift supervisor wants to find out how good the widgets produced by his workers are, so he asks them to measure the length and width of every 100th widget using calipers. Franco's calipers are very old and tend to produce measurements which are longer than they should be, while Johnny's are brand-new. What kind of bias is likely to arise in this situation? |
| | A) | Measurement bias. |
| | B) | Response bias. |
| | C) | Non-response bias. |
| | D) | No bias at all. |
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| 4 | |
A political party conducts an opinion poll in the lead-up to an upcoming election. It buys the subscriber list to a local business magazine and mails out a survey. What kind of bias is likely to arise in this situation? |
| | A) | Measurement bias. |
| | B) | Response bias. |
| | C) | Non-response bias. |
| | D) | No bias at all. |
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| 5 | |
Which of the following is an example of continuous data? |
| | A) | Goals scored per game. |
| | B) | Rain fall. |
| | C) | Paid admission to a local museum. |
| | D) | Pets owned by people in your class. |
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| 6 | |
Find the mean of the following data set:
95, 78, 72, 96, 89, 56 |
| | A) | 81 |
| | B) | 82 |
| | C) | 83.5 |
| | D) | 84.5 |
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| 7 | |
Find the median of the following data set:
47, 40, 59, 42, 40, 51 |
| | A) | 50.5 |
| | B) | 46.5 |
| | C) | 44.5 |
| | D) | 40.5 |
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| 8 | |
Given the chart shown:
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070780846/506634/FFCM11_Ch3StudyQuiz_question8.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (28.0K)</a>]]>
Find the standard deviation of the data. |
| | A) | 24.1 mm |
| | B) | 7.5 mm |
| | C) | 5.2 mm |
| | D) | 4.9 mm |
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| 9 | |
Given the chart shown:
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070780846/506634/FFCM11_Ch3StudyQuiz_question9.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (34.0K)</a>]]>
Find the interquartile range of the data. |
| | A) | 569.5 |
| | B) | 1055 |
| | C) | 3580 |
| | D) | 4635 |
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| 10 | |
Predict the shape of the distribution of the heights of adult citizens of Canada. |
| | A) | normal
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070780846/506634/FFCM11_Ch3StudyQuiz_question10a.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (3.0K)</a>]]> |
| | B) | skewed left
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070780846/506634/FFCM11_Ch3StudyQuiz_question10b.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>]]> |
| | C) | skewed right
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070780846/506634/FFCM11_Ch3StudyQuiz_question10c.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (4.0K)</a>]]> |
| | D) | bimodal
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070780846/506634/FFCM11_Ch3StudyQuiz_question10d.jpg','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (5.0K)</a>]]> |
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