 |
1 | |
The term ANOVA |
| | A) | Has no special meaning. |
| | B) | Stands for Analysis of Variance. |
| | C) | Stands for Another Numerical Observation of the Variance. |
| | D) | None of the above. |
|
|
2 | |
The general idea of analysis of variance is to compare estimates of variance |
| | A) | From both between the treatment means and within the treatment means. |
| | B) | Based on the several treatments. |
| | C) | From within the treatments. |
| | D) | None of the above. |
|
|
3 | |
Which of the following is not a characteristic of the F distribution? |
| | A) | It is a discrete distribution. |
| | B) | It cannot be negative. |
| | C) | It is based on two sets of degrees of freedom. |
| | D) | It is positively skewed. |
|
|
4 | |
The term "Treatment" refers to |
| | A) | A source of variation. |
| | B) | The numerator degrees of freedom. |
| | C) | The variation within the cells. |
| | D) | None of the above. |
|
|
5 | |
Suppose we select 6 observations from each of three treatments. The appropriate degrees of freedom are |
| | A) | 3 and 6. |
| | B) | 2 and 6. |
| | C) | 2 and 15. |
| | D) | None of the above. |
|
|
6 | |
The term MSE |
| | A) | Is called the mean square error. |
| | B) | Is found by SSE (n – k). |
| | C) | Is an estimate of the common population variance. |
| | D) | All of the above. |
|
|
7 | |
Which of the following is an assumption required for ANOVA? |
| | A) | The populations are normally distributed. |
| | B) | The populations have equal standard deviations. |
| | C) | The samples are independent. |
| | D) | All of the above. |
|
|
8 | |
Under which of the following conditions will the computed value of F be negative? |
| | A) | When there is no difference in the treatment means. |
| | B) | When there is a large difference in the treatment means. |
| | C) | When SS total is larger than SST. |
| | D) | F cannot be negative. |
|
|
9 | |
Suppose we conduct an ANOVA test of four treatment means and reject the null hypothesis. Construction of a confidence interval for the difference between the first and second sample mean revealed the interval to be 10 plus or minus 12. We conclude |
| | A) | This pair of means differ. |
| | B) | This pair of means does not differ. |
| | C) | Because we do not know the units involved, we cannot draw any conclusion. |
| | D) | Because we do not know the degrees of freedom, we cannot draw any conclusion. |
|
|
10 | |
 <![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070951640/354829/c1101.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"> (23.0K)</a>]]>
What is the total number of observations in the study? |
| | A) | 22 |
| | B) | 21 |
| | C) | 19 |
| | D) | 8 |
|
|
11 | |
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070951640/354829/c1101.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"> (23.0K)</a>]]>
How many treatments were considered? |
| | A) | 3 |
| | B) | 2 |
| | C) | 1 |
| | D) | 6 |
|
|
12 | |
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070951640/354829/c1101.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"> (23.0K)</a>]]>
Which of the following is a correct statement of the null hypothesis? |
| | A) | The treatment means differ. |
| | B) | The treatment means are the same. |
| | C) | The sample sizes are the same. |
| | D) | None of the above. |
|
|
13 | |
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070951640/354829/c1101.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"> (23.0K)</a>]]>
Assume the .05 significance level. What is the critical value of F? |
| | A) | 5.93 |
| | B) | 3.52 |
| | C) | 3.58 |
| | D) | 19.4 |
|
|
14 | |
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070951640/354829/c1101.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"> (23.0K)</a>]]>
Which of the following is a correct statement? |
| | A) | Do not reject H0. The treatment means differ. |
| | B) | Reject H0. The treatment means do not differ. |
| | C) | Do not reject H0. The treatment means do not differ. |
| | D) | Reject H0. The treatment means differ. |
|
|
15 | |
<![CDATA[<a onClick="window.open('/olcweb/cgi/pluginpop.cgi?it=jpg::::/sites/dl/free/0070951640/354829/c1101.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"> (23.0K)</a>]]>
Which of the following statements is correct? |
| | A) | There is no difference between any pair of means. |
| | B) | There is a difference between c1 and c2. |
| | C) | There is a difference between c1 and c3. |
| | D) | None of the above statements is correct. |
|