3) Identification and Analysis of Coefficient of Correlation and Identification and Analysis of Coefficient of Determination A1 Page 144234 Selling5 Price840007900091500678910111213141550001680001516 17250017174000175000181917750020184000211955002219500023120000127500132500145000164000BCProblem #4-22Bedrooms2233333343433 4343DAge(Years)30253040183019710T33TONOM110210EFGHSUMMARY OUTPUTJRegression StatisticsMultiple R 0.889328R Square 0.790904Adjusted F 0.761034Standard E 18457.67Observatic17ANOVARegressionResidualTotaldfKLMNSSMSFgnificance F2 1.8E+10 9.02E+09 26.47752 1.75E-0514 4.77E+09 3.41E+0816 2.28E+10OPOCoefficientsandard Err t Stat P-value Lower 95% Jpper 95%ower 95.0%pper 95.0%Intercept 110098.2 30511.12 3.608463 0.00285 44658.39 175538.1 44658.39 175538.1Bedrooms 21205.58 8725.374 2.430334 0.029124 2491.511 39919.64 2491.511 39919.64(Years) -1963.64 401.2537 -4.89377 0.000237 -2824.25 -1103.04 -2824.25 -1103.04

From the output, The coefficient of determination (R square ) = 0.7909 It means that 79.09% of the…

Answered: 3) Identification and Analysis of…

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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4. What do you know about explained and unexplained variation? What is regression line and regression equation?
How many independent variables entered in the overall model and was/were not able to enter? What is the coefficient of determination in the overall model?
Dependent variable - Machine maintenance costs Independent variable - Machine hours Intercept - 3500 Coefficient on independent variable - 3.50 Coefficient of correlation - 0.856 R^2 - 0.733 What percentage of the variation in maintenance costs is explained by the independent variable?
Coom O Launch Meeting Zoom O Launch Meeting Zoom Check Your Understanding Die x 711f0308264d0cbd87b76a#screenldx=D2 ng High intracranial pressure (inside the skull) typically is a a. How many false positives were there among these 189 people? Explain the meaning of a false positive for the person tested. result of an injury to the head and can be very dangerous. A screening test for high intracranial pressure was proposed many years ago, based on the data in the following observations. This simple and non-invasive test involves observing the retinal vein to see if it is pulsating. Pulsation is normal and so would be considered a negative test result. Pulsation Absent Pulsation Present Total (Positive Test) (Negative Test) High Intracranial Pressure (Condition Present) Normal Intracranial Pressure b. How many false negatives were there? Explain the meaning of a false negative for the person tested. 43 43 (Condition Absent) 18 128 146 Total 61 128 189 Sources: B.E Levin, "The Clinical…
Correlation coefficientGeneral form of SLR equation
Select five pairs of variables from the table. For each pair, report the following items: Name of the variables Correlation coefficient of the variables Significance of the correlation coefficient Interpret the sign of the correlation coefficient Interpret the magnitude of the correlation coefficient Table 4: Correlations of Variables 1 2 3 4 5 6 7 8 9 10 Program 1 Effect. (127) Score Number .171* 1 of staff (125) (130) Public .338* .518*' 1 revenu (119) (123) (124) Private .311* .220* .431*' 1 revenue (120) (124) (122) (125) Comp. .451* .451*' .610*' .519*' Services (125) (128) (123) (125) Number .221* .947*' .504*' .242*' .457*' 1 of (125) (130) (123) (124) (128) (130) positions Board -.267 .026 -.044 -.095 -.186* .140…
Correlation coefficient between hoursspend on using mobile per day and hours spend on readingbooks per day.
1. Which type of graphs best describe the nominal-level data?I BoxplotII Bar chartIII Times series graphIV Pareto chart(a) II only(b) III and IV(c) II and IV(d) I, II, and III
Question 2. Lawyer Salaries [10 marks] Suppose the column Lawyer Salary in Assignment-1_S24.xlsx data file contains the salaries of articling lawyers in Ottawa firms. (a) Test at the 0.05 level of significance whether there is sufficient evidence to conclude that the average salary of articling lawyers in Ottawa exceeds $75,000. Use the critical value approach. (b) Now calculate the p-value for the result in part (a). (c) Finally calculate a 95% 1-sided confidence interval for the average salary of an articling lawyer in Ottawa. (d) Explain why the p-value and confidence interval do or do not support your conclusion in part (a). (e) Show a boxplot of the data and explain whether the assumptions of the test and confidence interval are reasonable.
\ Property 3: The Modulus Value of the Arithmetic Mean of the Regression Coefficients is Greater than the Modulus Value of the Correlation Coefficient

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