Bivariate Relationships in Statistics Chapter Exam

Exam Instructions:

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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Question 1 1. Which of the following statements is NOT true regarding correlations?

Question 2 2. What is a graph of ordered pairs showing a relationship between two sets of data?

Question 3 3. A scientist is designing an experiment with rats, and designates weight as the dependent variable. Why might this be the case?

Question 4 4. A researcher is doing a statistical analysis of his data and has concluded that the variables 'time spent during training' and 'company revenue' have a correlation of r=1, thus concluding that there is a positive perfect correlation between these two variables. Why did the researcher likely make a mistake?

Question 5 5. What do we call a prediction where a variable (y) is dependent on a second variable (x) based on the regression equation of a given set of data?

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Question 6 6. Joe is doing an analysis of data for his Economics 104 class. He has the value of the foreign direct investment and political stability of one country. What could he learn about this relationship from the Pearson Coefficient?

Question 7 7. A scientist finishes an experiment, and concludes that there is a causal link between the independent variable and the dependent variable. Why might they come to this conclusion?

Question 8 8. What is the relationship between two sets of variables used to describe or predict information?

Question 9 9. What kind of graph is shown?

Question 10 10. Zoe needs to analyze the strength of the relationship between two variables. What is the correct name for the test she needs to conduct?

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Question 11 11. Susan conducts a study and is able to make a scatterplot from the data she gathers. Susan's study is chosen to be published in a scientific journal, but does not include her scatterplot. Which of the following explains why Susan chooses not to include her scatterplot in the scientific journal?

Question 12 12. Which of the following is the outlier?

Question 13 13. Which of the following problems could be studied through the use of regression analysis?

Question 14 14. This is the term given when r=-1

Question 15 15. One variable in a data set that is analyzed to describe a scenario or experiment is called _____

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Question 16 16. Which of the following shows a scatter plot with a pattern?

Question 17 17. What is a graph of ordered pairs showing a relationship between two sets of data?

Question 18 18. The linear model uses what to fit the data?

Question 19 19. Scatter plots are used to look for what?

Question 20 20. Which of the following Pearson Coefficients is MOST statistically significant?

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Question 21 21. Which of the scatterplots shows a positive correlation?

Question 22 22. What is it called when dependent variables and independent variables in a data set either increase or decrease opposite from one another?

Question 23 23. Which of the following best describes a scatterplot?

Question 24 24. What do we call two sets of variables that can change and are compared to find relationships?

Question 25 25. Which of the following can you do once you have a good model?

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Question 26 26. What is a condition or piece of data in an experiment that can be controlled or changed?

Question 27 27. A numerical representation of the relationship between two variables is called the _____.

Question 28 28. Which of the scatterplots shows no correlation?

Question 29 29. A scientist is conducting an experiment on mice, seeing how their weight is affected by the volume of cheese they're given. What is the independent variable in this experiment, and why?

Question 30 30. What kind of graph is shown?

Bivariate Relationships in Statistics Chapter Exam Instructions

Choose your answers to the questions and click 'Next' to see the next set of questions. You can skip questions if you would like and come back to them later with the yellow "Go To First Skipped Question" button. When you have completed the practice exam, a green submit button will appear. Click it to see your results. Good luck!

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