1. The power of thettest increases with ____.
| increases in the effect of the independent variable |
| decreases in the sample variance(s) |
| all of the other three options |
2.Having just made what you feel is to be a Type II error, using an independent groups design and attest analysis, which of the following might you do in the next experiment to reduce the probability of a Type II error?
| change to a correlated groups design |
| try to reduce the variance by better experimental control |
| all of the other three options |
3.Thettest for correlated groups requires that ____.
| the sampling distribution ofis normally distributed |
| the population raw scores are normally distributed |
| the sampling distribution ofis normally is normally distributed |
4.In thettest for independent groups, ____.
5.Exhibit 14-1
A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained.
| High stress | 20 | 23 | 18 | 19 | 22 |
| Relatively stress free | 26 | 31 | 25 | 26 | 30 |
Refer to Exhibit 14-1. The obtained value of the appropriate statistic is ____.
6.Exhibit 14-1
A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained.
| High stress | 20 | 23 | 18 | 19 | 22 |
| Relatively stress free | 26 | 31 | 25 | 26 | 30 |
Refer to Exhibit 14-1. The df for determiningtcritare ____.
6.Exhibit 14-1
A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained.
| High stress | 20 | 23 | 18 | 19 | 22 |
| Relatively stress free | 26 | 31 | 25 | 26 | 30 |
Refer to Exhibit 14-1. Using a= .052 tail,tcrit= ____.
7.Exhibit 14-1
A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained.
| High stress | 20 | 23 | 18 | 19 | 22 |
| Relatively stress free | 26 | 31 | 25 | 26 | 30 |
Refer to Exhibit 14-1. Usinga= .052 tail, your conclusion is ____.
| acceptH0; stress does not affect the menstrual cycle |
| retainH0; we cannot conclude that stress affects the menstrual cycle |
| retainH0; stress affects the menstrual cycle |
| rejectH0; stress affects the menstrual cycle |
8.Exhibit 14-1
A professor of women's studies is interested in determining if stress affects the menstrual cycle. Ten women are randomly sampled for an experiment and randomly divided into two groups. One of the groups is subjected to high stress for two months while the other lives in a relatively stress-free environment. The professor measures the menstrual cycle (in days) of each woman during the second month. The following data are obtained.
| High stress | 20 | 23 | 18 | 19 | 22 |
| Relatively stress free | 26 | 31 | 25 | 26 | 30 |
Refer to Exhibit 14-1. Estimate the size of the effect.= ____
9.Which of the following tests analyzes the difference between the means of two independent samples?
| ttest for independent groups |
10.Which of the following is (are) assumption(s) underlying the use of theFtest?
| the raw score populations are normally distributed |
| the variances of the raw score populations are the same |
| the mean of the populations differ |
| the raw score populations are normally distributed and the variances of the raw score populations are the same |
11.If its assumptions are met, the analysis of variance technique is appropriate when ____.
| two or more factors are varied |
| several levels of a single independent variable are compared |
| three or more groups are involved |
| all of the other three options |
12.sB2is a measure of ____.
| s2+ the effects of the independent variable |
| the variability between the means |
| s2+ the effects of the independent variable and the variability between the means |
13.The total degrees of freedom for an experiment withn1= 10,n2= 12, andn3= 10 is ____.
14.Exhibit 15-3
Pertain to the following data.
Group 1- 4, 9, 10
Group 2- 11, 11, 10
Group 3- 1, 6, 4
Refer to Exhibit 15-3. What is the value ofFobt?
15.Exhibit 15-3
Pertain to the following data.
Group 1- 4, 9, 10 Group 2- 11, 11, 10 Group 3- 1, 6, 4
Refer to Exhibit 15-3. What is the value ofFcrit? Usea= 0.05.
16.Exhibit 15-3 Pertain to the following data.
Group 1- 4, 9, 10 Group 2- 11, 11, 10 Group 3- 1, 6, 4
Refer to Exhibit 15-3. What is your conclusion? Again usea= 0.05
17.Exhibit 15-3
Pertain to the following data.
Group 1- 4, 9, 10 Group 2- 11, 11, 10 Group 3- 1, 6, 4
Refer to Exhibit 15-3. Using, the estimated size of effect is ____.
18.
Exhibit 15-3
Pertain to the following data.
Group 1- 4, 9, 10 Group 2- 11, 11, 10 Group 3- 1, 6, 4
Refer to Exhibit 15-3. Using2, what is the estimated size of effect?
19.What is the value ofSSTifSSB= 236 andSSW= 54?
20.By doing multiple t tests when there are more than 2 experimental groups we increase the risk of making what kind of mistake?
| all of the other three options |
21.If X1=46, X2= 50, X3= 92 andn1=n2=n3, what is the value of Xg?
| cannot be determined from information given |
22.IfSSW= 126,N= 28,k= 4, then what is the value ofsW2
| cannot be determined from information given |
23.If dfB= 3 and dfT= 29 andFobt= 3.15, what would you conclude usinga= 0.05?
24.IfsB2= 27.9 andsW2= 54.2, what is the value ofFobt?
| impossible result, there must be an error |
25.A prioricomparisons ____.
| are planned in advance of the experiment |
| often arise out of theory and prior research |
| may be done without obtaining a significantFobtin the one-way ANOVA |
| all of the other three options |
26.The sampling distribution of chi-square is ____.
| is a theoretical distribution |
| all of the other three options |
27.The computation offe____.
| is based on population proportion estimates |
| is based on known population proportions |
| is based on population means |
| none of the other three options |
28.IfN= 18 anda= 0.052 tailed, the value ofTcritis ____.
29.Ifa= 0.05, and df = 4, the value ofc2crit= ____.
30.Exhibit 17-1
Prior to a recent gubernatorial election, a survey was conducted to determine whether there was a relationship between sexual gender and preference for the Democratic or Republican candidate. The following data were recorded.
Republican Female: 82 Democrat Female: 118 -- 200
Republican Male: 68 Democrat Male: 132 -- 200
--150 --250 --400
Refer to Exhibit 17-1. The value ofc2obt= ____.
31.Exhibit 17-1
Prior to a recent gubernatorial election, a survey was conducted to determine whether there was a relationship between sexual gender and preference for the Democratic or Republican candidate. The following data were recorded.
Republican Female: 82 Democrat Female: 118 -- 200
Republican Male: 68 Democrat Male: 132 -- 200
--150 --250 --400
Refer to Exhibit 17-1. The value of df = ____.
32.Exhibit 17-1
Prior to a recent gubernatorial election, a survey was conducted to determine whether there was a relationship between sexual gender and preference for the Democratic or Republican candidate. The following data were recorded.
Republican Female: 82 Democrat Female: 118 -- 200
Republican Male: 68 Democrat Male: 132 -- 200
--150 --250 --400
Refer to Exhibit 17-1. Usinga= 0.05,c2crit= ____.
33. Exhibit 17-1
Prior to a recent gubernatorial election, a survey was conducted to determine whether there was a relationship between sexual gender and preference for the Democratic or Republican candidate. The following data were recorded.
Republican Female: 82 Democrat Female: 118 -- 200
Republican Male: 68 Democrat Male: 132 -- 200
--150 --250 --400
Refer to Exhibit 17-1. Usinga= 0.05, what is your conclusion?
| acceptH0; there is no relationship between sex and candidate preference |
| rejectH0; there is a significant relationship between sex and candidate preference |
| retainH0; the study does not show a significant relationship between sex and candidate preference |
| retainH0; this study shows a significant relationship between sex and candidate preference |
34.As the separation between the two groups of scores increases,Uobt____.
35.The statistics (UorU') used in the Mann-WhitneyUtest, measure ____.
| the differences between the means of the two groups |
| the direction of the differences between pairs of scores |
| the power of the experiment |
| the separation between the two groups |
36.Using SPSS, the appropriate steps to analyze data for students t test for correlated groups are _________
| Compare Means > Paired Sample t test > Before_C > After_C |
| Analyze > Compare Means > Paired Sample t test > After_C > Before_C |
| Analyze > Compare Means > Paired Sample t test > Before_C > After_C |
| Analyze > Compare Means > Before_C > After_C |
37.In SPSS, the results of analysing data for students t test are displayed ____.
38.In SPSS, the appropriate steps to analyze data for a one-way ANOVA are ____.
| you cannot perform ANOVA in SPSS |
| One-Way ANOVA >Analyze > Compare Means |
| Compare Means > One-Way ANOVA |
| Analyze > Compare Means > One-Way ANOVA |
39.In SPSS, when you follow the steps to perform one-way ANOVA, ____.
| you will not be given the option to compute descriptive statistics |
| you will be given the option to compute descriptive statistics |
| you will be given the option to compute descriptive statistics, but you have to open a new file |
| you will be given the option to compute descriptive statistics, but you have to restart SPSS |
