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| 1 | |
The term _____ refers to the variation in measures due to some known or unknown influence that causes the scores to skew in one direction or another. |
| | A) | precision |
| | B) | standard error |
| | C) | systematic variance |
| | D) | sampling error |
| | E) | random error |
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| 2 | |
Jason is trying to reduce sampling error in a study he is conducting. He will be watching for _____. |
| | A) | differences between the sample statistics and the population's parameters caused by random fluctuations inherent in the sampling process |
| | B) | bias caused by using a poor sampling frame |
| | C) | error created by systematic variance |
| | D) | differences between the results of a census and the population's parameters |
| | E) | error created by differences between those who respond to the survey and those who do not |
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| 3 | |
The _____ is equal to the number of elements in the population belonging to the category of interest, divided by the total number of elements in the population. |
| | A) | standard deviation |
| | B) | standard error |
| | C) | population proportion of incidence |
| | D) | population variance |
| | E) | sample statistic |
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| 4 | |
All of the following statements about sample size are true EXCEPT _____. |
| | A) | the greater the variance within the population, the larger the sample should be |
| | B) | the greater the desired precision of the estimate, the larger the sample should be |
| | C) | the larger the error range, the larger the sample must be |
| | D) | the higher the level of confidence in the estimate, the larger the sample must be |
| | E) | the greater the number of subgroups of interest within a sample, the larger the sample must be |
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| 5 | |
Periodicity in a population refers to ____ and is more likely cause error in ____ sampling. |
| | A) | reoccurring pattern in parameter of interest, random sampling |
| | B) | reoccurring patterns of time in parameter of interest, systematic |
| | C) | reoccurring patterns of time in parameter of interest, stratified |
| | D) | reoccurring pattern in a parameter of interest, stratified |
| | E) | reoccurring pattern in a parameter of interest, systematic |
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| 6 | |
Area sampling is a type of _____ sampling technique. |
| | A) | simple random |
| | B) | systematic |
| | C) | cluster |
| | D) | proportionate stratified |
| | E) | disproportionate stratified |
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| 7 | |
During an interview study, the researcher asks if participants know of anyone that holds similar views to their own on the topic of interest, and whether they would refer them as participants. The researcher is using _____ sampling. |
| | A) | convenience |
| | B) | judgment |
| | C) | quota |
| | D) | snowball |
| | E) | area |
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| 8 | |
What is the equation for a 95% confidence interval? |
| | A) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073521507/1005958/ch14_1.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"> (2.0K)</a>]]> |
| | B) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073521507/1005958/ch14_2.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"> (2.0K)</a>]]> |
| | C) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073521507/1005958/ch14_4.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"> (2.0K)</a>]]> |
| | D) |  <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0073521507/1005958/ch14_3.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"> (2.0K)</a>]]> |
| | E) | none of the above |
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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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