Hours Studied vs Final Exam Score 100 80 60 40 20 0 0 2 4 6 8 10 Hours Studied Final Exam Score (Percents)
Added by Andrea J.
Close
Step 1
We have the equation of the least squares regression line: y = 35.7 + 6.8x Show more…
Show all steps
Your feedback will help us improve your experience
Sri K and 56 other Probability educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Recommended Videos
The number of hours 13 students spent studying for a test and their scores on that test is given: Hours of Study, x: 0 1 2 4 4 5 5 5 6 6 7 7 8 Test Score, y: 40 41 51 48 64 69 73 75 68 93 84 90 95 (a) Graph a scatter diagram of the table and the equation of the regression line and plot it on the same scatter diagram to see the regression line. (b) What is the correlation coefficient (r) of the model? (c) If a student studies 7 hours, predict the test score of this student.
Adi S.
Donna D.
The data below are the final exam scores of 10 randomly selected Algebra students and the number of hours they studied the week prior to the exam. Find the equation of the regression line for the given data. What would be the predicted score for a student who studied 5 hours the previous week? Round your answer to the nearest whole number. Use the following values to speed up the calculations: x̄ = 4.8, ∑x = 48, ∑x^2 = 300, SSxy = 233.6, ȳ = 77.3 Hours, x | 3 | 5 | 2 | 9 | 2 | 4 | 4 | 10 | 6 | 3 Scores, y | 65 | 80 | 60 | 88 | 66 | 78 | 85 | 90 | 90 | 71
Recommended Textbooks
Probability with Applications in Engineering, Science, and Technology
Probability and Statistics for Engineers and Scientists
Applied Statistics and Probability for Engineers
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD