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Topic: Relationship of Two Variables: Scatterplot, Linear Correlation and Degree of Determination Suppose that data on a random sample of used cars of the same brand and model on mileage (in kilometers) and prices (in vere collected and tabulated, as shown below. Mileage (in km) Price (in pesos) ху (x1000) (x 10,000) 50 50 45 55 60 45 38 55 28 60 29 60 51 50 40 55 100 30 72 38

Topic: Relationship of Two Variables: Scatterplot, Linear Correlation and Degree of Determination Suppose that data on a random sample of used cars of the same brand and model on mileage (in kilometers) and prices (in vere collected and tabulated, as shown below. Mileage (in km) Price (in pesos) ху (x1000) (x 10,000) 50 50 45 55 60 45 38 55 28 60 29 60 51 50 40 55 100 30 72 38

MATLAB: An Introduction with Applications
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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Topic: Relationship of Two Variables: Scatterplot, Linear Correlation and Degree of Determination Suppose that data on a random sample of used cars of the same brand and model on mileage (in kilometers) and prices (in pesos) were collected and tabulated, as shown below. Price (in Mileage (in km) pesos) ху x2 (x1000) (x 10,000) 50 50 45 55 60 45 38 55 28 60 29 60 51 50 40 55 100 30 72 38
Transcribed Image Text:Topic: Relationship of Two Variables: Scatterplot, Linear Correlation and Degree of Determination Suppose that data on a random sample of used cars of the same brand and model on mileage (in kilometers) and prices (in pesos) were collected and tabulated, as shown below. Price (in Mileage (in km) pesos) ху x2 (x1000) (x 10,000) 50 50 45 55 60 45 38 55 28 60 29 60 51 50 40 55 100 30 72 38
1. Draw the scatterplot MANUALLY • Label your x & y variables according to given variable names • Identify and label correctly the ordered pairs of the 'points' or 'dots' • Write your analysis and interpretation according to your scatterpoint diagram 2. Compute for the coefficient of correlation (r) MANUALLY. • Create the table of summations: Ex, Ey, Exy, Ex² and EY2 • Show the complete solution for 'r' • For the final answer as part of the solution, 'r' value must be rounded up to 4 decimal places. • Write your analysis and interpretation according to your correlation coefficient (r) 3. Compute for the degree of determination (r2) and interpret the result. Degree of determination (r2) is expressed in percent form up to 2 decimal places.
Transcribed Image Text:1. Draw the scatterplot MANUALLY • Label your x & y variables according to given variable names • Identify and label correctly the ordered pairs of the 'points' or 'dots' • Write your analysis and interpretation according to your scatterpoint diagram 2. Compute for the coefficient of correlation (r) MANUALLY. • Create the table of summations: Ex, Ey, Exy, Ex² and EY2 • Show the complete solution for 'r' • For the final answer as part of the solution, 'r' value must be rounded up to 4 decimal places. • Write your analysis and interpretation according to your correlation coefficient (r) 3. Compute for the degree of determination (r2) and interpret the result. Degree of determination (r2) is expressed in percent form up to 2 decimal places.
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