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1 | |
Which term below refers to the percentage of elements in the distribution that meet a criterion? |
| | A) | population |
| | B) | proportion |
| | C) | sample |
| | D) | estimate |
| | E) | frequency |
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2 | |
Which of the research questions below is best answered using a frequency distribution? |
| | A) | What percentage of the market consists of heavy users, medium users, light users, and nonusers? |
| | B) | How do men and women vary in their attitudes toward the brand? |
| | C) | What is the relationship between sales and time of year? |
| | D) | How effective is the advertising campaign in driving store traffic? |
| | E) | Are college students more likely to download music than people the same age who do not attend college? |
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3 | |
The value that occurs most frequently in a data array is called the _____. |
| | A) | mean |
| | B) | median |
| | C) | mode |
| | D) | range |
| | E) | standard score |
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4 | |
The square root of the variance is the _____. |
| | A) | mode |
| | B) | standard deviation |
| | C) | standard score |
| | D) | standard error |
| | E) | population precision |
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5 | |
Which term below refers to a measure of the relative peakedness or flatness of the curve defined by the frequency distribution? |
| | A) | Kurtosis |
| | B) | Deviation |
| | C) | Point estimate |
| | D) | Standard error |
| | E) | Z score |
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6 | |
Which term below refers to a interval estimate that provides a known probability of including the unknown population parameter? |
| | A) | point estimate |
| | B) | range |
| | C) | confidence interval |
| | D) | confidence level |
| | E) | variance |
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7 | |
What is the equation for a 95% confidence interval? |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072837861/238996/17_7a.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072837861/238996/17_7b.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072837861/238996/17_7c.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=gif::::/sites/dl/free/0072837861/238996/17_7d.gif','popWin', 'width=NaN,height=NaN,resizable,scrollbars');" href="#"><img valign="absmiddle" height="16" width="16" border="0" src="/olcweb/styles/shared/linkicons/image.gif"> (1.0K)</a>]]> |
| | E) | none of the above |
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8 | |
Precision is measured with the _____. |
| | A) | degree of confidence researchers wish to have in the estimate |
| | B) | size of the sample |
| | C) | finite correction factor |
| | D) | measure of central tendency |
| | E) | z score |
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9 | |
When the size of the calculated sample exceeds _____ percent of the population, a correction factor formula should be applied to adjust the sample size. |
| | A) | 5 |
| | B) | 10 |
| | C) | 15 |
| | D) | 20 |
| | E) | 30 |
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10 | |
Philadelphia is conducting a study on the characteristics of tourists who drive to Eagles home football games. Previous studies indicate that approximately 70% of all game attendees are people who decided to drive from out of town. If the researcher leading the study desires a 99% confidence level and an interval range of plus or minus 10%, what size should the sample be? |
| | A) | 120 |
| | B) | 210 |
| | C) | 330 |
| | D) | 1450 |
| | E) | 2258 |
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