School administrators wondered whether class size and grade achievement (in percent) were related. A random sample of classes revealed the following data. Number of Students 15 10 8 20 18 6 Average Grades (%) 85 90 82 80 84 92 1. Calculate the linear correlation coefficient (Round all answers to TWO decimal places) 2. Calculate the coefficient of determination (Round all answers to TWO decimal places) 3.The linear regression equation is y = x + (Round all answers to TWO decimal places) 4. Using your regression equation, what would you expect the average grade (%) to be in a class with 30 students? % (Round all answers to TWO decimal places)
School administrators wondered whether class size and grade achievement (in percent) were related. A random sample of classes revealed the following data. Number of Students 15 10 8 20 18 6 Average Grades (%) 85 90 82 80 84 92 1. Calculate the linear correlation coefficient (Round all answers to TWO decimal places) 2. Calculate the coefficient of determination (Round all answers to TWO decimal places) 3.The linear regression equation is y = x + (Round all answers to TWO decimal places) 4. Using your regression equation, what would you expect the average grade (%) to be in a class with 30 students? % (Round all answers to TWO decimal places)
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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School administrators wondered whether class size and grade achievement (in percent) were related. A random sample of classes revealed the following data.
| Number of Students | 15 | 10 | 8 | 20 | 18 | 6 |
| Average Grades (%) | 85 | 90 | 82 | 80 | 84 | 92 |
1. Calculate the linear
2. Calculate the coefficient of determination (Round all answers to TWO decimal places)
3.The linear regression equation is
y = x + (Round all answers to TWO decimal places)
4. Using your regression equation, what would you expect the average grade (%) to be in a class with 30 students? % (Round all answers to TWO decimal places)
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