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MANOVA, Reflection, and Post Test

MANOVA, Reflection, and Post Test PLDZ-3909
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End-of-course Stats Quiz

  1. In experiments the independent variable is manipulated to determine:
  2. A null hypothesis:  
  3. Which of the following is least affected by outliers?
  4. What is an outlier? 
  5. A scatterplot shows:
  6. Ordinal level data are characterized by:
  7. Logical regression is used when you want to:
  8. What does a significant test tell us?
  9. How much variance has been explained by a correlation of .9?
  10. When interpreting a correlation coefficient, it is important to look at:
  11. What is meant by a 'spurious' relationship between two variables?
  12. Correlational studies allow the researcher to:
  13. R2 is:
  14. What is multicollinearity?
  15. Which of the following is NOT a research question which could be investigated with logical regression?
  16. A researcher was interested in stress levels of lecturers during lecturers. She took the same group of 8 lecturers and measured their anxiety (out of 15) during a normal lecture and again in a lecture in which she had paid students to be disruptive and misbehave. Based on the SPSS output how would you interpret these results?
  17. An independent t-test is used to test for:
  18. A dependent t-test is used to test for:
  19. Which of the following is an Indpendent Measures design?
  20. A Repeated Measures design would be appropriate for which of the following situations?
  21. Consider this table: How many people took part in this experiment?
  22. Consider this table: Did the independent variable have an effect?

Consider this table: What was the dependent variable?

  1. A psychologist was looking at the effects of an intervention on depression levels. Three groups were used: waiting list control, treatment and post treatment (a group who had had the treatment 6 months before). The change in depression levels over the time of the treatment were recorded (although bear in mind only the treatment group actually got any treatment during this time). The SPSS output is below; based on this output what should the researcher conclude:  
  2. Calculate, interpret, and understand the appropriate use of inferential statistical analysis. The total variation in response, assuming no bias,  is  due  to  error (unexplained  variation)  plus  differences  due to treatments  (known variation).  If known variation is large compared to unknown variation, which of the following conclusions can be drawn?
  3. A music teacher had noticed that some students went to pieces during exams. He wanted to test whether this performance anxiety was different for people playing different instruments. He took groups of guitarists, drummers and pianists (variable = ‘Instru’) and measured their anxiety (Variable = ‘Anxiety’) during the exam. He also noted the type of exam they were performing (in the UK, musical instrument exams are known as ‘grades’ and range from 1 to 8). He wanted to see whether the type of instrument played affected performance anxiety when controlling for the grade of the exam, what analysis should he use?
  4. In a factorial design, with two factors,  if the effect of one factor appears to depend on the levels of the second facto, this is called:
  5. Consider the following chart; what is show in the graph?
  6. A nutritionist conducted an experiment on memory for dreams. She wanted to test whether it really was true that eating cheese before going to bed made you have bad dreams. Over three nights, the nutritionist fed people different foods before bed. On one night they had nothing to eat, a second night they had a big plate of cheese, and the third night they had another dairy product, Milk, before bed. All people were given all foods at some point over the three nights. The nutritionist measured heart rate during dreams as an index of distress. How should these data be analyzed?
  7. A nutritionist conducted an experiment on memory for dreams. She wanted to test whether it really was true that eating cheese before going to bed made you have bad dreams. Over three nights, the nutritionist fed people different foods before bed. On one night they had nothing to eat, a second night they had a big plate of cheese, and the third night they had another dairy product, Milk, before bed. All people were given all foods at some point over the three nights. The nutritionist measured heart rate during dreams as an index of distress. Which statement is the correct way to report these results?
  8. What is NOT an advantage of MANOVA?
  9. A Type I error is when:
  10. If we calculated an effect size and found it was r = .42 which expression would best describe the size of effect?
  11. Which of these statements about statistical power is not true?

 

End-of-course Stats Quiz In experiments the independent variable is manipulated to determine: A null hypothesis: Which of the following is least affected by outliers? What is an outlier? A scatterplot shows
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