Dependent variables are not affected by other variables. O True O False
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- Stock Market The week of September 15, 2008 was one of the most volatile weeks ever for the US stock market. The closing numbers of the Dow Jones Industrial Average each day were: What was the overall change for the week? Was it positive or negative?A quasi-independent variable is most similar to and consistent with which of the following terms? A. control group B. manipulation C. Non-equivalent groups research study D. pre-post research studyIn quantitative research, the main difference between surveys and correlational research is ? A. Correlational studies are larger than surveys B. Surveys can be correlational studies, so there are no differences C. With surveys researchers gather their own data; in correlational studies researchers typically use existing datasets D. Surveys are larger than correlational studies
- You have an independent variable of “dose of pain medication.” The level of pain would be the _______, the subjects who get the placebo are the ______, and the subjects who get the actual pain medication are the _______. Group of answer choices Control variable; experimental group; control group Operational definition; experimental group; control group Dependent variable; control group; experimental group Sample; control group; experimental groupA professor in a university is trying to conduct a research study. His study is trying to determine if his 8 am lecture is more interactive with him than his 2 pm lecture. What is the independent variable? How many levels are there for the independent variable? What is the dependent variable?For each of the following pairs of variables, is there likely to be a positive association, a negative association or no association? Briefly explain your reasoning. (a) Amount of alcohol consumed and performance on a test of coordination. There is likely to be a positive association. As alcohol consumption increases, performance on a test of coordination will tend to increase. There is likely to be a negative association. As alcohol consumption increases, performance on a test of coordination will tend to decrease. No association would be expected between amount of alcohol consumed and performance on a test of coordination. (b) Height and grade point average for university students. There is likely to be a positive association. As height increases, grade point average for university students will tend to increase. There is likely to be a negative association. As height increases, grade point average for university students will tend to decrease. No association would be…
- Dixie Showtime table shows how weekly gross revenue is dependent on two variables the television and newspaper advertising expenses, is that correct? Discuss by givingthree new examples.For test taking, do you retain information better writing it down with paper and pen or typing on a laptop? There will be 2 groups of students taking the same exam. Prior to the exam, they are given a crash course to study, 1 group writing down notes with pen and paper and the other group typing notes on a laptop. What is the dependent variable?Interaction terms allow us to account for situations where the relationship between one or more independent variables and the dependent variable may change depending on the levels of another variable. True False
- Indicate the dependent and independent variables, the number of levels for each independent variable, and whether each variable is within-subjects or between subjects. A researcher standing by the door of a grocery store stops half of the males and half of the females who enter alone and presents them with a free gift of a pen and a small pad of paper; the other shoppers do not receive a gift. The researcher then notes how much money each shopper spends in the store.Thompson Photo Works purchased several new, highly sophisticated processing machines. The production department needed some guidance with respect to qualifications needed by an operator. Is age a factor? Is the length of service as an operator (in years) important? In order to explore further the factors needed to estimate performance on the new processing machines, four variables were listed: x1 = Length of time an employee was in the industry x2 = Mechanical aptitude test score x3 = Prior on-the-job rating x4 = Age Performance on the new machine is designated y. Thirty employees were selected at random. Data were collected for each, and their performances on the new machines were recorded. A few results are: Performance on New Machine, Length of Time in Industry, Mechanical Aptitude Score, Prior On-the-Job Performance, Age, Name y x1 x2 x3 x4 Mike Miraglia 118 11 343 122 50 Sue Trythall 116 8 307 128 21 The equation is: yˆy^ = 10.2 +…Thompson Photo Works purchased several new, highly sophisticated processing machines. The production department needed some guidance with respect to qualifications needed by an operator. Is age a factor? Is the length of service as an operator (in years) important? In order to explore further the factors needed to estimate performance on the new processing machines, four variables were listed: x1 = Length of time an employee was in the industry x2 = Mechanical aptitude test score x3 = Prior on-the-job rating x4 = Age Performance on the new machine is designated y. Thirty employees were selected at random. Data were collected for each, and their performances on the new machines were recorded. A few results are: Performance on New Machine, Length of Time in Industry, Mechanical Aptitude Score, Prior On-the-Job Performance, Age, Name y x1 x2 x3 x4 Mike Miraglia 112 12 329 122 31 Sue Trythall 117 10 387 119 23 The equation is: yˆ y^ = 11.8…
