The personnel director for Electronics Associates developed the following estimated regression equation relating an employee's score on a job satisfaction to his or her length of service (years) (x;) and wage rate (RM per hour) (X2) . ŷ =14.4– 8.69x, +13.5.x, (i) Interpret the coefficients in this estimated regression equation. (ii) Estimate the job satisfaction test score for an employee who has four years of service and makes RM6.50 per hour.
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.
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