Homework Answers
26. The correct answer is Option B. Making a Type 1 error is seen as more dangerous than making a Type II error.
27. The correct answer is Option D. Two independent variables should be measured and one dependent variable.
28. The correct answer is Option C. They allow studying the effects of two independent variables simultaneously.
29. The correct answer is Option A. It is important to know the degrees of freedom.
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26. Which of the following is normally true in behavioral research? a. Making a Type 2...
QUESTION 44 In a two way ANOVA, how many effects (main effects and interaction) are tested?...
QUESTION 44 In a two way ANOVA, how many effects (main effects and interaction) are tested? a. 4 b. 1 c. 3 d. 2 2 points QUESTION 45 Main effects are defined as the effect of ______. a. one independent variable on the dependent variable that changes at the different levels of another independent variable b. the dependent variable on the independent variable within a factorial research design c. an independent variable on the dependent variable within a factorial...
Which of the following is the best reason why one-way ANOVA should be used instead of...
Which of the following is the best reason why one-way ANOVA should be used instead of running several t-tests when there are more than two experimental groups? A. Doing several t-tests means you might forget which variables you have compared B. t-tests and ANOVA require different levels of measurement for their dependent variable C. Performing several t-tests raises the probability of making at least one Type I error D. Performing several t-tests raises the probability of making at least one...
1) Which type of error is more likely to be made if it is difficult to...
1) Which type of error is more likely to be made if it is difficult to perform sampling and there is high population variance? Select one: a. Type I error b. Type II error c. Type III error d. a and b, but not c e. a, b and c 2) Pearson's r is suitable to measure the linear relationship between two __________ level variables. Select one: a. interval/ratio b. ratio but not interval c. interval but not ratio d....
1. Ifa study includes random assignment but not a control group, the design may still be...
1. Ifa study includes random assignment but not a control group, the design may still be considered to be a true experimental design. True a. b. False Using control groups help account for which of the following threats to internal validity except? 2. History a. b. Testing Maturation c. None of the above d. If the results of a study determine that an intervention did not work, though for reasons not related to the intervention, the 3. study would have...
One of the major learning objectives of this chapter is to define a factorial research design,...
One of the major learning objectives of this chapter is to define a factorial research design, including the terms factor and level, and to identify and describe factorial designs when they appear in a research report. The goal of experiments is to establish the existence of a cause-and-effect relationship between two variables. To accomplish this goal, the researcher manipulates one variable (that is, the independent variable) and measures a second variable. Nonexperiments and quasi-experiments are similar to experiments except that...
1. How many F ratios must be computed for an analysis of variance of a 2x4...
1. How many F ratios must be computed for an analysis of variance of a 2x4 factorial design? 2. Imagine that you are conducting a one-way ANOVA with three groups, N=100 in each. Under which of these conditions would you have the least statistical power? A. True R2 = .05 B. True R2 = .10 C. True R2 = .01 3. The Solomon 4-Group Design is especially useful for identifying ____________________. A. pre-test effects B. effects of experimenter bias C....
Answer the following questions: 1) Which of the following research designs poses a threat to internal validity called se...
Answer the following questions: 1) Which of the following research designs poses a threat to internal validity called selection? a) one-shot case study b) one-group pretest-post test c) static-group comparison d) one-group 2) This type of research is considered a descriptive methodology in which results of interviews, observations, or questionnaires reveal what is happening at a particular occurrence. It involves recording, describing, analyzing, and interpreting conditions that presently exist. Comparisons and contrasts are attempted to reveal relationships between the non-manipulated...
Lesson: -Factorial designs have more than one independent variable or factors. -A two way factorial design...
Lesson: -Factorial designs have more than one independent variable or factors. -A two way factorial design has two independent variables, a three-way factorial design has three independent variables and so forth. -A 2x2 design has two factors and two levels of each. -A 2x3 design also has two factors but one has two levels and one has three. -A 3x3 design has two factors and each factor has 3 levels. Each example has 2 independent variables or factors. Comparison of...
(1) determine the type of research design used (experiment, quasi-experiment, correlation, archival, naturalistic observation, etc) (2)...
(1) determine the type of research design used (experiment, quasi-experiment, correlation, archival, naturalistic observation, etc) (2) ) identify the independent (or predictor) variable(s) and the dependent (or criterion) variable(s), (if any). A. A human resource manager was interested in determining if there was a relationship between employee satisfaction and absenteeism. The professor had 220 employees complete a test of job satisfaction and then compared the scores on this test with the number of days each employee missed work over the...
1. The use of multivariate statistical techniques has become more commonplace largely due to the increasingly...
1. The use of multivariate statistical techniques has become more commonplace largely due to the increasingly complex nature of research designs and related research questions. 2. A study appropriate for multivariate statistical analysis is typically defined as one with several dependent variables (DVs). The basic distinction between experimental and nonexperimental research designs is whether the levels of the independent variable(s) have been manipulated by the 3. 4. In nonexperimental research (eg, descriptive, correlational, survey, or causal- comparative designs), the researcher...
1. Ifa study includes random assignment but not a control group, the design may still be considered to be a true experimental design. True a. b. False Using control groups help account for which of the following threats to internal validity except? 2. History a. b. Testing Maturation c. None of the above d. If the results of a study determine that an intervention did not work, though for reasons not related to the intervention, the 3. study would have...
One of the major learning objectives of this chapter is to define a factorial research design, including the terms factor and level, and to identify and describe factorial designs when they appear in a research report. The goal of experiments is to establish the existence of a cause-and-effect relationship between two variables. To accomplish this goal, the researcher manipulates one variable (that is, the independent variable) and measures a second variable. Nonexperiments and quasi-experiments are similar to experiments except that...
1. The use of multivariate statistical techniques has become more commonplace largely due to the increasingly complex nature of research designs and related research questions. 2. A study appropriate for multivariate statistical analysis is typically defined as one with several dependent variables (DVs). The basic distinction between experimental and nonexperimental research designs is whether the levels of the independent variable(s) have been manipulated by the 3. 4. In nonexperimental research (eg, descriptive, correlational, survey, or causal- comparative designs), the researcher...
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