The following data represent the calories and sugar, in grams, of various breakfastcereals.Product Calories Sugar D12.04.017.523.117.5F19.3G16.4Use the data above to complete parts (a) through (d).ABCDE270300310440460470540a. Compute the covariance.(Round to three decimal places as needed.)

The given paired observations of calories and sugar in grams are as…

Answered: The following data represent the…

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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What is the correlation coefficient of variables x and y? A. -0.96 B. -0.98 C. 0.98 D. 0.96
A random sample for 11 exam scores produced the following (hours of study, grade) data values. Hours Studied (X) Test Grade (Y) 2 10 8 1 7 89 57 84 5 9 74 95 55 96 a. Compute the covariance. b. Compute the correlation coefficient. a. The covariance is (Round to three decimal places as needed.) 50 70 6 90 10 20 97 63
A study of emergency service facilities investigated the relationship between the number of facilities and the average distance traveled to provide the emergency service. The following table gives the data collected. Average Distance Number of Facilities (miles) 1.67 11 1.11 16 0.82 21 0.62 27 0.50 30 0.47 (a) Develop a scatter diagram for these data, treating average distance traveled as the dependent variable. 1.8 T 35 1.8 1.8 1.6- 1.6- 1.6 30 1.4 1.4 1.4 1.2 25 1.2 1.2 1. 1. 1. 20 0.8 0.8 0.8 0.6 15 0.6 0.6- 0.4 0.4 0.4 10 0.2 0.2 0.2 0. 5 0. 0. 10 15 20 25 30 35 0. 0.2 0.4 0.6 0.8 1. 1.2 1.4 1.6 1.8 5 10 15 20 25 30 35 10 15 20 25 30 35 Number Distance Number Number (b) Does a simple linear regression model appear to be appropriate? Explain. O Yes, the scatter diagram suggests that there is a linear relationship. O No, the scatter diagram suggests that there is a curvilinear relationship. O No, the scatter diagram suggests that there is no relationship. (c) Develop an estimated…
Below is a set of data from a sample of n = 11: X 3 6 10 12 4 9 15 18 7 5 8Y 9 18 30 36 12 27 45 54 21 15 24 Answer the following questions:(a) Calculate the covariance.(b) Calculate the coefficient of correlation.(c) What conclusions can you reach about the relationship between X and Y? Explain.
R1
The following data gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams. Hours Spent Studying 0 0.5 2 3 Midterm Grades 66 69 75 78 81 84 87 3.5 4 4.5 5 5.5 6 90 96 99 Step 3 of 3: Calculate the correlation coefficient, r. Round your answer to three decimal places. Copy Data

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