HW9 Download this document and insert your answers to do this…
Question Answered step-by-step HW9 Download this document and insert your answers to do this… HW9 Download this document and insert your answers to do this portion of the Homework Assignment. To submit your assignment, upload a word document (.doc or .docx) or pdf of the word document to Blackboard. This part of the homework assignment is worth 5 points. 1. The figure below is a scatterplot showing the relationship between drive ratio and horsepower. Based only on the figure, how would you describe the relationship between these two variables? (Make sure to address its form, direction, and strength; 1.5 points) Form – Direction – Strength – 2. What is the biggest limitation a researcher faces when using a correlational design? (1 point) 3. Give one example of a study that would need to use a correlational design instead of an experimental design. (1 point) Note: Calculating a Pearson Correlation Coefficient, r, is a relatively simple process. We already know how to do 2/3 of the calculations; the only new intermediate step is calculating the Sum of Products of Deviations, SP. Use the following scenario and data to answer questions 3 – 5. In this study, researchers are interested in the relationship between algebra quiz scores and statistics quiz scores. The data from six students appears in the table below. StudentAlgebraStatistics Product of deviationsA64 B31 C50 D67 E42 F64 Malgebra = 5 Mstatistics = 3 4. Calculate SS for the two variables. Use the table above to help show your work (1 point, show work to earn full credit) SSalgebra = SSstatistics = 5. Calculate SP for this data set. Use the table above to help show your work (0.5 point, show work to earn full credit) Math Statistics and Probability PSYC 317 Share QuestionEmailCopy link Comments (0)
