A statistics professor wants to know whether a student's mark on the second statistics test is a good indicator of the student's mark on the final exam. She records the two marks for a random sample of students. Create a scatter diagram, and estimate and interpret the relationship between the two variables.
Answer to relevant QuestionsCheck the requirements for regression for the data set of student marks on the second test and the final exam in a statistics course, described in Exercise 11. If appropriate, test for evidence of a linear relationship between the actual and recorded inventory values for Aries Car Parts (using the amended data set from Exercise 16). Use α = 0.05. If appropriate, create a 98% confidence interval estimate for the average test score of graduates with an overall average mark of 75, based on the data set described in Exercise 20. In exercise A large company has developed ...For the Salaries data set, create scatter diagrams showing the relationship between each possible explanatory variable and salaries. Are there any obvious problems? Are there some variables that seem particularly strong as ...Use the salaries model based on years of postsecondary education and age to make a 95% prediction interval estimate of the salary of an individual who is 35 years old and has five years of postsecondary education.
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