Cars.com would like to use simple linear regression to predict the selling price of a used car, in thousands of dollars, based on the age of the car in years. A random sample of used cars was selected and the result of the regression analysis is shown below. SUMMARY OUTPUT Regression Statistics Multiple R 0.7885 R Square 0.6217 Adjusted R Square 0.5461 Standard Error 1.4528 Observations ANOVA df Significance F MS Regression 1 17.3464 17.3464 8.2182 0.0351 Residual 5. 10.5536 2.1107 Total 27.9 Coefficients Standard Error t Stat P-value Lower 95% Upper 95% Intercept Age 11.6881 1.2403 9.4237 0.0002 8.4999 14.8764 -0.5072 0.1769 -2.8667 0.0351 -0.9620 -0.0524 Based on the given information, thep value for testing if slope of true line is different from zero is (Keep all the decimal places) A and the value of the coefficient of determination for this model is (Keep all the decimal places)
Correlation
Correlation defines a relationship between two independent variables. It tells the degree to which variables move in relation to each other. When two sets of data are related to each other, there is a correlation between them.
Linear Correlation
A correlation is used to determine the relationships between numerical and categorical variables. In other words, it is an indicator of how things are connected to one another. The correlation analysis is the study of how variables are related.
Regression Analysis
Regression analysis is a statistical method in which it estimates the relationship between a dependent variable and one or more independent variable. In simple terms dependent variable is called as outcome variable and independent variable is called as predictors. Regression analysis is one of the methods to find the trends in data. The independent variable used in Regression analysis is named Predictor variable. It offers data of an associated dependent variable regarding a particular outcome.
Cars.com would like to use simple linear regression to predict the selling price of a used car, in thousands of dollars, based on the age of the car in years. A random sample of used cars was selected and the result of the
Based on the given information, the p value for testing if slope of true line is different from zero is (Keep all the decimal places)
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